Judging by that picture (very nice place, BTW) you ought to bring the left main in next to the TV. I would go 5.1 and put QS8s on stands either side of the main viewing area. When you get your surrounds too far away it just doesn't seem to envelop as much. Go big-ass sub (SVS PB2 or even dual SVS 20-39s) and consider M80s or M60s. My 2 cents (we oughta be gettin' paid for this ).

Oh yeah, get a big screen (HD CRT RPTVs 51" start from $1000). $3500 bucks and you'll have a smokin' system.