Yep, I'm with you on those GLS mics. I love 'em.
As far as the studio goes, I describe it like this: I built it just for inasmuch as that's how I've planned on building it forever. In the past couple years though, I've recorded some others, and fully expect to grow that work. But the bottom line is the same: the room is made for me to enjoy working in it, and I would--even if I never shared it!
Floor plan? I'm not sure what you mean. The layout of this room? or the rest of the space that its a part of?