Your room is pretty large, so I'd consider a subwoofer for extended bass response. The 12" SVS is app $650, and I'd also add a controller (I use the Velodyne SMS-1 at app $500) for best integration. The remaining $850 can buy some excellent smallish main speakers from many different manufacturers, new or used.
Good Luck
Marty
PS - I have a pair of Silverline Preludes in my gym and they're certainly a good choice for extended bass/small footprint (especially at the $), but I suspect that your room may be a bit too large for best results.
Good Luck
Marty
PS - I have a pair of Silverline Preludes in my gym and they're certainly a good choice for extended bass/small footprint (especially at the $), but I suspect that your room may be a bit too large for best results.