Ok so I built the 2x4 frame for the slide out base today. It was a tight fit, so tight in fact that it created a vacuum and made it hard to pull out, so I shaved a little off just to make things easier.
I went ahead and cut the two rails waay too long, about 3 feet, in case I need it for the support system. Now that I've gotten everything in place it looks like the entire thing might be too long honestly. I put a cross beam at the 2 foot mark, pulled the whole thing out and my feet were really too far away. I might be able to get away with making the whole thing shorter, which would be great as it would take up even less space.
I really need to figure out my pedal situation and then I can trim things to the exact size and start building the control panel area and it's supports.
I'll post pics tonight or tomorrow, but right now I'm too tired. I think the shop camera is dead anyway.
So I'm thinking that the pc could go in the slide-out portion, with a access door on the top. The only problem is those a 2x4 studs, so the pc can only be 3 1/2 feet tall. If I can find some plate metal for the access door, maybe, just maybe I can get another inch or two. Of course I don't have to put it in a case, but that sure makes things easier to deal with.
So can anyone recommend a good pc with a small form factor actually capable of running stuff like supermodel?