yeah i agree w jmac. i think you only need some good fronts (components) look at MB quarts n infinity, and Boston acoustics. im only gonna run fronts. however, your car is big, i mean big, i think think u said u had a lincoln suv? i might be wrong.
kick panels are better but extra $200 i believe. u can just run the midrange in teh factory front location and the tweeter in the door pillars (the inside part of where ur side mirrors are at).
as for subs, there are so many combinations. if you know for sure what you want we can help u better. like you want a lot of SPL, or you want a mix SQL, or just SQ. to make it simple, you want someting that BOOOOOOOOOOOOOOOMSSSSS, or something that just BOOOOMSS?