Oh man I need to log in and see this for myself.
Yes, you really do.
How in the world are you guys gonna fill the entire ship?
Well, that's nearly the last fixed-placement feature (i.e. a room or something that has
to be in a specific location). The only others are the internal whatnots for the turrets, which obviously need to be behind each turret, and the bridge and medbay, which logically
would be placed in the central core of the ship, for protection.
Once those are done, we'll get the primary fore-aft corridors in place (still not sure whether to do 2 on each deck, or on every other deck), then add the remaining facilities (mess hall+kitchen, armory, etc) wherever seems suitable, then possibly run the tour rail line to hit the main features, then create the decks themselves, then start filling them in with rooms & secondary corridors... *breathes*