To the OP, if money is the concern at this time, save up and do what you want the first time and do it right. These are nice trucks and they have a huge amount of potential when it comes to mind blowing car audio. They just sound good when done properly. If you scrap a system together quickly on a budget (which we all have a budget $$$) you may end up not happy in the end, and you may even start replacing stuff down the road which will ultimately waste time and money in the long run. If you want killer sound, the equation is quite simple....spend most of your budget on front components....that's the meat and potatoes of the system. After that....good, clean power. Then a nice, simple sub stage. Save your money and forget about the rear doors....they really offer nothing to the big picture. If you hear your rear door speakers, you've tuned it incorrectly....rear speakers should simply add ambiance and some "fill" and that's about it.
Regarding rattles, resonances, and buzzes....remove the outer door panel and sound deaden all sides of the door panel. There are many tutorials on this and it is very effective. It will also increase midbass performance in your doors as well.
Do it right the first time.....while saving that money....do research
best of luck!