If i am imaging it right you are describing something akin to 2 double doors on both sides of the room.

For 1500 cubic feet m22's are the way to go. They can get plently loud. I definetely reccomend a good sub. By buying the m22's you can save some money and get that svs or hsu sub. i think HSU will be coming out with an vtf-1 sometime soon. what kind of shipping fees and taxes are you talking about
damn NAFTA

Once You Pop You Can't Stop