Redneck, You do not have a small room. 12 x 12 is a small room. Your room demensions are about as close to ideal as one could realistically hope for.
Bipolars need plenty of room and sound best well into the room IMO, If you can't place them that way I would stay clear of that design. I'm not up on the new Definitive Tech. speakers but have listened to the old Mirage M1/M3's many times and thought they were great speakers if placed well into the room and away from side walls. As subaruguru stated..Try them first would be best.