I will probably up the money and spend it on the nxg NX-BAS-500, since the room is not big enough to support two subwoofers. Then there is the thought of getting a good receiver, which I have narrowed down to the Denon x1000. I'm just waiting till I April to get the receiver or whenever a sale pops up.
5.1 surround sound should be plenty for the room I'm putting it in. Room dimensions are approximately 11x10x7 (in feet). If I use the full size of the room, it would approximately be 11x20x7.