I'd strongly encourage you to explore testing observation lounge designs using the ring of windows on the underside of the primary hull. Even at a 945ft scale (because, at that size, the 11-footer becomes at
perfect 1/84th), the view and set possibilities are fantastic. My favorite use of the space was as double-height areas, emulating the Rec Dec's intended design with slopes and multiple levels, including an open space in the center and walkways along the windows for up-close views of the outside. It was a glorious mock-up, using as many TOS set elements as possible, like the ubiquitous angled support beams.
Shame. I'll have to rebuild the thing from scratch someday. I scrapped the model a long time ago, and I never thought any of those test shots were good enough to keep....