Hi Bud. Congrats on the new house! It looks like you will have a great area for your new theater with a little (i.e. a lot) of your talented DIY retooling. You are subscribed!
I noticed you are not able to receive PMs for some reason, so I thought I would post here. I just saw your iPhone video of the new space. In it you mention that your new potential equipment room (i.e. the "panic room") is underneath your front porch. I thought I would let you know that this is officially called a "cold room" and is not really considered a part of livable, frameable, enclosable basement space - ever.
The reason why is that the front porch above is exposed to ALL of the elements, including wind-driven rain, pressure-washing, etc. It is not designed to be completely water-tight above so there is always the potential for leaks. There is really no watertight "roof" to this area, and no real design to make even the sides watertight. The concrete may be impermeable, but cracks can develop and perimeter caulking can loosen with time. And if you have it finished out and it ever leaks, these leaks can obviously lead to a very serious mold problem - even if you use spray foam, fiberglass faced drywall and all other "mold-proof" finishing materials. So I would encourage you to rethink the final purpose of this room for these reasons, especially for long-term use.