1999 Saturn SC2, CA-425 & CA-545

Hey guys.  I just purchased the CA-425 Master Module & CA-545 Remote Start Module.  I still haven't received it but i plan on putting it in this week.  I found the install manual for it here.  I looked at the install manual and it doen'ts seem too bad. I've never installed an alarm before.  I've done a couple of  radio installs and they were easy as all hell.  Well i always use solder and electical tape.  I would like to use shrink wrapping but i never cut the wires, just slice some insulation off, splice the wires together and then solder, so i dont know how one would go about using shrink wrapping for that.

Anyway, I've read that you have to disable the stock alarm during the staring, my quesition is can i just leave it in there and never arm it, like throw the stock remotes away or something???  and if not, can i jut pull the box out or there, or completely disable it or something like that. 

Also, does anyone have a detailed diagram for this car?  I saw the one in the Vehicle Wiring section, but it seems like its missing some wires.   

Some other quesions i have are:    For the door trigger should i use the dome light input?  Where do i mount the modules, whats a good spot?  Where exactly do i find the starter bypass module that the stock alarm is hooked up to???  Now I'm assuming that that i can find the brake pedal switch and the defrost turn on wire. 

Any suggestions would be awesome.   Thanks

I know someone out there has some suggestions.  One main question i have is what type of locks does this vehicle have, and how do i hook up the 2 stage door unlock.  In the manual (link in last post above) it has diagrams with relays, but i was under the impression that you didn't need any extra relays for this unit. 

thanks