"would that be a sealed inclosure or ported?"
that is great for a home theater sealed 4 cubic foot setup.
i was just trying to suggest something that would maximize performance in your mostly music application, but if you don't have the space, you don't have the space.
if you do have the space, that driver, same power, in a ported 7 cubic footer net, gives 6db more spl at 30hz, which is the same as two sealed subs and amps.
that is where it really comes down to what you want and are willing to tradeoff.