Dedicated Room

Take a look at the AM Acoustics Room Mode Simulator to help you.  Ideally you'll want to keep your speakers and listening location (including subs) away from the lowest mode locations for the smoothest response. 

Your problem is going to be that either way, your listening location is going to have to be close to the speakers. If you put the speakers on the long wall, you can't be more than 9' away.  If you put them on the short wall you'll have to stay close to keep the imaging and room from being too big of an impact.  I would choose the speakers on the short wall because that lets you have more space behind your listening area to put diffusion on. 

Also, with space this tight you really should treat the ceiling. GIK Acoustics is the first place I look.

What is limiting the width of the room??  

Thanks a lot guys. Good info there. The limiting factor is my better half needing me to cut it off at about 9 feet. I could possibly get 10 feet but that’s about the best I could do. I would love 12 or even 14 for sure.

By the way, those speakers do prefer well closer to the wall but I would say they are best at least 2-3 feet away from the wall.

After you fully educate yourself, you might be in a better position to negotiate with your wife.  In my case, I gave my wife something that she always wanted and she ignored the credit card balance.  So, don’t just give up before the game is even on.  The room is probably the single most important element of a good system.  I would suggest that clean power would be at number two.