Your theater is 3200sqft, WHAT?
Your house must be 20,000sq ft on 20 acres I'm guessing.
That sounds like a barn, rather than a room. Let me guess, the ceiling is more than 10ft as well
If you sit directly on the subwoofers... you might be able to reach 5db. LOL
You're gonna need 16 Dayton's in that room, and 8 EP2500's, minimum.
I sure hope you have an IMAX screen in that room to go with.