Custom Fiberglass Sub Box

[CSA0890]

I am working on building my own fiberglass enclosure in the hatch area of my z. My goals are to use as most of the wasted space without losing my spare tire. Most of the box is taking up the space from the styrofoam things. Ive got one side about 1/2 way done.
I am having a hard time deciding on subs. I dont know many non mainstream brands that are decent. I am thinking maybe RF T1 10s, JL 8 or 10W7, Kicker L7 (outside shot), Alpine Type X. Let me know if you have any suggestions.

On the part to the left which is the rear of the car I will have to cut the side plastic and mold around that to get the sub in nice and tight to the side to keep luggage space up.