Lots of interesting concepts and questions!!
Just to clarify, the text you posted has to do primarily with the outer space levels (the first one of an endless number) which is the future-creation arena for the finaliters of the current 7 Superuniverses of time and space. Pre-creation conditions are afoot out there but nothing specifically material yet I do not think. The quote is talking about that far distant time when the Supreme is experientially fulfilled in this dimension of time and space and all 7 Supers have experienced the Grand Jubilee of being fully settled in Light and Life - the "perfected Super Universes".
Anything visible in the outerspace levels may be more of a primordial soup than anything specific in formation. I don't know.
The actual creation format (including energy, force, gravity, and materials) out there may well be very different than in the existing 7 Supers! As far as the 7 Supers are concerned every single Local Universe is a separately created entity from all others in time and in some forms of creation potentials although all utilize the same forces and elements. Each Local may start with a mini-bang, the UB does not say but of course there has never been a singularity for all of creation. First came Havona, then the 7, and then began the Locals within each of the 7. Many worlds are not fully formed for life implantation and it can take a very long time for a world to be declared inhabited and the a million or more years before it achieves Light and Life and every world and System of worlds, and Constellation, and Local Universe, and Super Universe must achieve L&L before the text posted even begins to have relevance in time.
Those mortals who achieve Son or Spirit fusion rather than Father fusion will remain in the 7 Supers and Locals in residential service to the original universes of time and space. Father fused mortals and many, many celestials from the 7 Supers/Locals will go forth in the Corps of Finality to embrace the creation on whole new levels of existence and adventure in the outer space levels still to come.
As to how big it all is? It is infinitely big. It is immeasurably big. It is endless in its enormity and in its eternal adventure to come!! And we are on the way to that level of eternal and infinite adventure. Yahooooo!!!!
The Urantia Book
Paper 31
The Corps of the Finality
31:0.1 (345.1) THE Corps of Mortal Finaliters represents the present known destination of the ascending Adjuster-fused mortals of time. But there are other groups who are also assigned to this corps. The primary finaliter corps is composed of the following:
31:0.2 (345.2) 1. Havona Natives.
31:0.3 (345.3) 2. Gravity Messengers.
31:0.4 (345.4) 3. Glorified Mortals.
31:0.5 (345.5) 4. Adopted Seraphim.
31:0.6 (345.6) 5. Glorified Material Sons.
31:0.7 (345.7) 6. Glorified Midway Creatures.
31:0.8 (345.

These six groups of glorified beings compose this unique body of eternal destiny. We think we know their future work, but we are not certain. While the Corps of the Mortal Finality is mobilizing on Paradise, and while they now so extensively minister to the universes of space and administer the worlds settled in light and life, their future destination must be the now-organizing universes of outer space. At least that is the conjecture of Uversa.
31:10.11 (353.7) We venture the forecast of future and greater outer universes of inhabited worlds, new spheres peopled with new orders of exquisite and unique beings, a material universe sublime in its ultimacy, a vast creation lacking in only one important detail—the presence of actual finite experience in the universal life of ascendant existence. Such a universe will come into being under a tremendous experiential handicap: the deprivation of participation in the evolution of the Almighty Supreme. These outer universes will all enjoy the matchless ministry and supernal overcontrol of the Supreme Being, but the very fact of his active presence precludes their participation in the actualization of the Supreme Deity.
31:10.12 (353.

During the present universe age the evolving personalities of the grand universe suffer many difficulties due to the incomplete actualization of the sovereignty of God the Supreme, but we are all sharing the unique experience of his evolution. We evolve in him and he evolves in us. Sometime in the eternal future the evolution of Supreme Deity will become a completed fact of universe history, and the opportunity to participate in this wonderful experience will have passed from the stage of cosmic action.
31:10.13 (353.9) But those of us who have acquired this unique experience during the youth of the universe will treasure it throughout all future eternity. And many of us speculate that it may be the mission of the gradually accumulating reserves of the ascendant and perfected mortals of the Corps of the Finality, in association with the other six similarly recruiting corps, to administer these outer universes in an effort to compensate their experiential deficiencies in not having participated in the time-space evolution of the Supreme Being.
31:10.14 (353.10) These deficiencies are inevitable on all levels of universe existence. During the present universe age we of the higher levels of spiritual existences now come down to administer the evolutionary universes and minister to the ascending mortals, thus endeavoring to atone for their deficiencies in the realities of the higher spiritual experience.
31:10.15 (354.1) But though we really know nothing about the plans of the Architects of the Master Universe respecting these outer creations, nevertheless, of three things we are certain:
31:10.16 (354.2) 1. There actually is a vast and new system of universes gradually organizing in the domains of outer space. New orders of physical creations, enormous and gigantic circles of swarming universes upon universes far out beyond the present bounds of the peopled and organized creations, are actually visible through your telescopes. At present, these outer creations are wholly physical; they are apparently uninhabited and seem to be devoid of creature administration.
31:10.17 (354.3) 2. For ages upon ages there continues the unexplained and wholly mysterious Paradise mobilization of the perfected and ascendant beings of time and space, in association with the six other finaliter corps.
31:10.18 (354.4) 3. Concomitantly with these transactions the Supreme Person of Deity is powerizing as the almighty sovereign of the supercreations.
31:10.19 (354.5) As we view this triune development, embracing creatures, universes, and Deity, can we be criticized for anticipating that something new and unrevealed is approaching culmination in the master universe? Is it not natural that we should associate this agelong mobilization and organization of physical universes on such a hitherto unknown scale and the personality emergence of the Supreme Being with this stupendous scheme of upstepping the mortals of time to divine perfection and with their subsequent mobilization on Paradise in the Corps of the Finality—a designation and destiny enshrouded in universe mystery? It is increasingly the belief of all Uversa that the assembling Corps of the Finality are destined to some future service in the universes of outer space, where we already are able to identify the clustering of at least seventy thousand aggregations of matter, each of which is greater than any one of the present superuniverses.
31:10.20 (354.6) Evolutionary mortals are born on the planets of space, pass through the morontia worlds, ascend the spirit universes, traverse the Havona spheres, find God, attain Paradise, and are mustered into the primary Corps of the Finality, therein to await the next assignment of universe service. There are six other assembling finality corps, but Grandfanda, the first mortal ascender, presides as Paradise chief of all orders of finaliters. And as we view this sublime spectacle, we all exclaim: What a glorious destiny for the animal-origin children of time, the material sons of space!
31:10.21 (354.7) [Jointly sponsored by a Divine Counselor and One without Name and Number authorized so to function by the Ancients of Days on Uversa.]
