i have 1 jl audio w7 12 with a jl audio jx 500/1 amp in a single cab chevy 1500. I build custom boxes i recently built a box a customer backed out on, the box is fiberglass and replaces the middle seat. It can hold 3 12 inch subs. Im selling my w7 and thinking about buying 3 of the kicker L7. I havent cut the holes yet so i can get round or square base. I dont have to worry about mounting depth either. i am wanting to spend less than 700. Any ideas on what 3 subs i should buy.