Another single-driver possibility:
Caintuck Audio - Open Baffle Betsy. Very affordable.
http://www.caintuckaudio.com
They do need to be out in the room... well away from sides and wall behind to get the best sound. Not certain you can accommodate them in that regard though your overall room dimension is well-suited to them.
See also the Caintuck video at Decware.com
http://www.decware.com/newsite/Caintuck.html
Caintuck Audio - Open Baffle Betsy. Very affordable.
http://www.caintuckaudio.com
They do need to be out in the room... well away from sides and wall behind to get the best sound. Not certain you can accommodate them in that regard though your overall room dimension is well-suited to them.
See also the Caintuck video at Decware.com
http://www.decware.com/newsite/Caintuck.html