Installing a Remote Starter

So, I'm going to try and install a remote starter on my 8 (2011 GT, w/ AKE).

I got this:

Viper 4205V (2-way remote starter)
Xpresskit DBALL2 (key bypass)
Xpresskit XKLoader2 (to program the key bypass and maybe the viper)

I have some experience with electronics, but never tried to do anything on a car.

Any tips or tricks to doing this? Am I missing something?