A Hybrid Audio L631-3 set is around $780. (thats a L6, L3, and L1, which is essentially, a 7", 3" and tweet). These do NOT come with passive crossovers, so you will have to sort that out.

Several ways to go here...

Kick panels are good.
You can still get good sound with the midbass at the back of the door, but I would suggest a mid-range IF you can...