I've completed the integration of the full 3D interior models into the exterior model. The most time-consuming part was working on the interior walls of the exterior walls. So now I need to do some final tweaking on the interior models themselves before converting the Octane materials to standard C4D materials. I also plan to set up expression controls to switch the full 3D interiors on and off and conjunction with the other, image-based and light-based interior options that I have already set up.
I think I will be distributing the Enterprise in two flavors - one with the simple, image-based and light-based interiors and one with the full 3D interiors.
So while I do all of that, here's a screen shot of the interiors all incorporated into the exterior model.