This might explain what I'm trying to figure out a little better.
The studio is going to be on a floated floor with walls separated from the outside wall and door, so I need to work around the outside door or totally block it off. I was thinking that having the control room bigger and the "vocal" room a little smaller would allow me to have smaller things like guitar amps in the vocal room, while being able to put a drum kit where the couch is in the larger room if I needed to. I want to be able to come from the house into the studio, but it would also be nice to let people in from the exterior door - by putting an additional door into the studio on the other angled corner. This just seems like a lot of doors into the studio.
I don't know, I think I might loose the door to the outside -- might be better for security anyhow. Any chance of taking up more of that garage space? That could really open up some possibilities.