I've thought about that, but the way it looks, it really looks like individual floors. Take a look at it yourself. It looks about the size of a cruise liner.
It does, it looks pretty damn nice. I could think of a few ways, using imagination, to make it larger than it seems, but I'd have no actual proof to justify it like I do with the Radiance.
Oh wait, the hangar bay. Assuming all TEC ships have about the same sized hangar bays, since they are alll used to launch and recieve the same strike craft, we can use them to evaluate the size from another cap. Comparing the hangar bay from one ship to another should get you an approximate scale.