Man those seats look great! I am mocking up my door panels and kicks this weekend for sure! I am molding a kick like the Q-From style ones for a 6.5 and 1 pair like yours. I am using Infinity Reference series because it's what I had laying around.
My back will be 2 Kicker L7 subs, either 8" or 10" if they will fit. I am also molding the rear section, just not sure how until I get the tank out of there and see what kind of room I have to work with.
Again, that looks great! Can't wait to see it done.
<edit> I'm also molding a 5.25 into the stock door panel near the back corner for some rear fill.