Have you ever thought about taking up minature golf? Make a great dog-leg left. And whatever you do don't go to your local audio store (if they are like around here), they will try to install 14 speakers in the walls for you.
In any event, you haven't said where you like to sit and what's in the room. Usually an office imposes certain requirements in this direction. Also I've found that theory is nice in these cases, but nothing is as good as just experimenting. The formuals are very complicated in a room like this full of furniture and speakers have their own needs re distance to resolve the music. Floor and wall coverings might be as important as dimensions. Art Ludwig's site is my fav for browsing on this kind of issue (www.silcom.com/~aludwig) and the Horraum is good too (http://physchem.kfunigraz.ac.at/listeningroom).
Good Luck
Sincerely, I remain
In any event, you haven't said where you like to sit and what's in the room. Usually an office imposes certain requirements in this direction. Also I've found that theory is nice in these cases, but nothing is as good as just experimenting. The formuals are very complicated in a room like this full of furniture and speakers have their own needs re distance to resolve the music. Floor and wall coverings might be as important as dimensions. Art Ludwig's site is my fav for browsing on this kind of issue (www.silcom.com/~aludwig) and the Horraum is good too (http://physchem.kfunigraz.ac.at/listeningroom).
Good Luck
Sincerely, I remain