a lot of choices in the price range. Depends a lot on your preference for size/aesthetics.
I'll shoot you my recommendation because it's what I have in a room just a little larger. 5 NHT Superzeros. Or seven if you want. $100 each.
They look very nice, are relatively small, can be crossed over at 100hz without issue, have great imaging and nice sound stage and wonderful voicing.
Then pick a sub that will fit in that location from SVS, PSA, Rythmik or HSU. You'll have $500 -$1000 to spend depending on budget.
Klipsch RF-62II, RC-500, RS-400, SVS PC12+,
Def Tech SC8000
Harman Kardon AVR 1600
PS3, Apple TV, Sharp 70" Qattron