Well considering you're up against two 5k Zenon amps at 18v, you better hope you'e got similar power, which it seems you do.
Are you looking for loud to the ear, or loudest on a mic? I suggest, as it seems you've done, throwing up a serious box.
Electrical I guess you've got up to par
Deadening is the last main thing other than equalization - hope you're looking forward to that as well.
If you want, you can contact Steve. He can have two SuperHeavyweights on the way to you shortly, I'm sure, and they'll take some hellacious power and still play music decently well.
The TSNS is an UnGodly expensive woofer, but it's not a bad woofer by any means.
And PAP STOLE THE DESIGN to their big woofer.