The wonderful work on this room deserves the highest praise. Well done.
Beautiful work. And it's so fun to see a dedicated fan!
At the risk of being a bit deflating, and I don't mean to be: since it seems you are not finished I would put one more vote (to add to a few given years ago on this thread) to consider at least making adding a drop down screen possible in the future. Even if you still think you don't want one at this point.
This home theater building forum mostly concerns projection based set ups, so when I saw the first pages of this thread, as neat as the design was, the thought would not stop leaping to my mind "Oh no, he's ready to put THAT much work into the room, making a a special home theater experience, simply to surround an average flat screen sized TV? That's a recipe for regret, especially if he designs himself out of ever upgrading his TV size or going projection."
I don't know how you feel about this now, but from someone else (me) who had started designing around a 65" plasma, but moved to projection: I thought a flat screen was going to be fine (actually great). But one telling moment was when I brought my Jaws DVD a few years ago to an AV store (probably my favorite movie) and was able to view it on various TVs, and then on a projection set up. When I saw that huge image on the projector I was knocked out. It actually looked like film, it actually looked like the movie I fell in love with having seen it countless times in the cinema. For the first time in 30 years since it left the theaters, the shark actually looked BIG and threatening in front of me like I remembered it, and my eyes scanned the horizon when on the Orca, just as they used to when I'd see it on the big screen in the theater. After it's cinematic runs, I'd watched Jaws for so many years on TVs, and then plasma TVs. But here it was, a re-experience of the cinema I thought was gone forever. That was it. Hooked. I went projection and haven't looked back.
When I watch Star Wars on my flat panel it's like...well...watching Star Wars on TV, with miniature looking models. On my projection set up, it's like experiencing Star Wars in the cinema, the ships and sets look huge. The initial fly-over opening the first movie is nirvana.
So I find it perplexing when someone who has been so affected by films, and is such a fan, that it includes all that paraphernalia and building a theater room, but who would not opt to have a system that could present Star Wars and any other films in a much more cinematic and immersive fashion. (I was watching it on my screen at about 10 feet wide and it was complete cinematic bliss, the way it felt like just entering the Star Wars world).
So this is just advice taken from someone who has been there, and taken from experience of being on this forum for a long time. A lot of people get the upgrade itch at some point, so it's always good to keep that in mind during your build to accommodate future possibilities. It's especially acute when you finish your project and soon after start thinking "wow, this is really nice...but what would REALLY be great is if I had done..." and usually that is the road toward a projector.
All that said - this is a very entertaining build thread and I have huge admiration for the work you have done so far!