Woops, might help if I told you what I do.
I'm a composer, writing orchestral works.. sample based stuff. So there's that bit of info..
Thanks for the advice, I appreciate it! I'll check out that FAQ. If I have more questions once I move into my new place, I'll post here.
One thing, just for education's sake: why is the 11'x11' room bad? Is it because it's almost a perfect square, and the sound would bounce around much worse than in the 13'x10'?