I finally had my box built yesterday... the sub is pretty amazing for the size, more than happy with the SQ, the only issue ive run into is that I wish my amp could push the sub another 100 or so (running it around 480), the sub can definitely take it.
I think you'll be more than happy, and if I were you in hindsight I might try that PG amp (no experience with them), budget friendly, great rep and it could power the sub to its full continuous wattage
Either way 13tw5 is an insane piece of technology