looks like i fully understand what you are asking now. sorry it took so long.
as for RCA cables, you are going to have to pick up another set of them so that you can run an rca cable for every speaker. other than that you seem to have everything that you need.
http://www.crutchfield.com/p_142A17C...pair=FFLength|[rank4]10.1-ft+to+20-ft
should do you good. if you want to spend a bit more on rca cables go for it...probably not that necessary.
so basically you will run 4 rca cables to your amp. then run the speaker wires from your amp into the doors and the trunk. that is going to be a hassle but there isnt a way around it. you are going to have to route it under the seats and carpet through the kickpanel and hope you can find a way into the door.
im not sure if i answered your quesstions. if i didnt just post them again below and i will answer them to the best of my ability. but you seem to have everything, the only thing you might have to spend money on is more speaker wire, but even then 40ft should be enough.
good luck, and have fun