I have about 3.5-3.7 cubes available after port. Can I fit two 12" AB HD12's or one AB HD15"? I have the depth necessary. Is that amount of cubes cutting it too close? I was thinking between 32-35hz with an aeroport. Just wanting to do something different if it will work. Otherwise, I will go with two HD10's. Two 10's just seem blah!