Oh Tom I'm not THAT far yet. I mean I have a rough idea of everything but if I cram too much more in my tiny little brain it might pop lol. That's why i' trying to get this ball rolling so I can get some things out of my head to make room. This floor plan is pretty much for the soundproofing, i'll draw one up of seats, speaker, screen, fish tanks, etc. And yeah It won't touch the stair case. I'll have more questions and pictures on that wall when I get to it. I'm either double walling it or stagger studding it though.
And excellent to hear, was hoping drywall would be ok in the return plenums. Should a specific drywall be used ie. fire rated, paper face, etc.