What surrounds should I get?

I just purchased 2 Polk Monitor 60s for my fronts and a Polk CS2 for the center. I am planning on buying a BIC PL-200 for my sub (hence the 60s instead of the 70s) but am looking for some advice on my sides and rears.

Here is the layout of my room:



So the sides and rears will be nested inside columns which makes me nervous about buying anything rear-ported.

Any suggestions for side/rear speakers that will match my setup, somewhere in the $250 or less per pair range?

My AVR is a Yamaha VX-765.

Thanks!

Thanks for the replies. I am open to moving the seats, they are really just representations of an approximate size for Bekline recliners. The platform they sit on it 6 feet deep, so there is some room to move forward, plus I could move the front seats closer to the screen.

I was kind of thinking of a setup like this thread:

http://www.avsforum.com/avs-vb/showp...3&postcount=84

And the rears for that setup as depicted here:

http://www.avsforum.com/avs-vb/showt...4#post14049244


Any idea how those Definitive Technology BP1.2X would match with the Polk 60s and CS2 I have in the front?

I have read that the Monitor 40s need to be at least 6 inches from the wall, which is what led me away from them.

Again, thanks for all the replies!