I could be totally wrong, but I don't understand why many people are recommending mid to low sensitivity, wide dispersion, direct radiating loudspeakers. At 10,000+ cubic feet, the listening space is huge. The OP implies that he listens at very high sound levels and I just don't see how loudspeakers with 8-10 inch woofers are going to provide sufficient low frequency response in such a large room. Almarg makes a point about reflected sound possibly not being a problem, but I think a controlled directivity loudspeaker would lessen the problem even further.
Again, I ask the OP to indicate how loudly he desires to listen.
Again, I ask the OP to indicate how loudly he desires to listen.

