Help with system...JL 13W7'S

Ok im set on putting two JL 13W7'S in my 07' escalade EXT...what kind of highs should I use and how many? What kind of mids should i use and how many? What kind of amps should I use and how many (I already have a memphis belle 1500watt from my old system... how many extra batteries will i need? will i have to upgrade my altenator? i want to get all the parts on my own so i could get the best prices....but i just need to know exactly what i need and i figured i could find good help here... Thanks