Okay so first things first...I'm pretty dumb when it comes to car audio...all I know is I know good sound when I hear it...and Bose..well, need I say more.

So I went to the car audio place down the street from me and they were saying they should be able to do the following somehow some way:

Factory Nav/Radio will remain intact

Replace all door speakers with Kappa 6.5 component speakers..try and remove the 6.5 sub in back and fit a 6.5 Kappa as well. Drive them with a Kicker 600.4

Build a custom box, ported with 2 8W7's...drive it with a Kicker 1000.1...install a capacitor and few other things
that I can't remember

Any red flags? Am I going to kill my brand new car or can pro's actually install this stuff with the right kind of equipment and it turn out alright? I realize it's pretty counterproductive with what the car was made for but I won't mind...I just don't want to be stranded somewhere because I decided to do this and the cars electrical setup can't handle the pull on the system. Feel free to make jokes at how rediculous this is...but I would like to get some useful advise as well before I drop the car off next tuesday, 6/5/12...Thanks