Like others before, I would recommend against spending money at BB, even if it seems like a good deal. Not saying that BB has bad stuff, but it is way overpriced. For the same money spent ($200-300) you can do much better elsewhere.
In a 12x12 room, floorstanding speakers are going to be overkill. IMO, get good bookshelf speakers and add a subwoofer at a later stage. For bookshelf speaker options, here is a
review done by AH, the contenders,
Yamaha NS-6490 - $150/pr
Polk Audio R15 - $179/pr
Behringer B2030P - $190/pr
Yamaha NS-333 - $199/pr
Aperion Audio Intimus 4B - $260/pr
Infinity Primus P162 - $318/pr
EMP EF30 - $399/pr
Pinnacle P5.2 - $550/pr
JBL Synthesis HT1F - $850/pr
From personal experience, I whole heartedly recommend these,
EMP Impression Bookshelf Speaker, $200 shipped.