Well, I had the speakers and stereo professionally installed, sounds nice! Money well spent in my opinion.  The kit was missing the adapter for my specific model vehicle, and the antenna adapter. 
I tried to install them myself, but in the end I saved myself even more headaches. 
I'm not so fantastic with wiring, but I think it'll be easier to add things versus modifying something existing, we'll see, I am not afraid to admit when something is beyond me.
I was forced to drive at night to get home since I stopped for a burrito, scary at first then less terrifying. Good burrito.
I got my blind spot mirror too, I'll pop that on tomorrow.
Note to self, buy bungee cords and secure contents in back of the van. :Wow1:
Oh by the way I have one of those all in one tools, but I tried the tool picture above that the fellow at radio shack lent me and the wires slipped out too. Still, I learned my lesson and I'm going to return it and get a better tool tomorrow.