What would you say about my indoor subwoofer setup?

This is for indoor use? And you need 1000w why? Car audio subs are way different than home theater subs, look at the freq response on the JVC, are you putting in an adjustable crossover? because having your sub pump freqs over about 80hz is making it work too hard and you will have a tough time blending it with your main speakers - I understand the fun of making your own gear but I don't understand your choices. I own an HSU Research VTF-2 MK 3 12" Subwoofer , 250w amp that goes to 18hz and I could literally knock down walls if I wanted to and it sounds great and can be tuned to blend naturally with my main speakers. Anyway, I would be interested to hear your response to my questions. Good luck