Welcome to the forum, glad to see yet ANOTHER from AZ! I am in southern AZ, same as Skeeterbilt.
Looks like you are starting with a pretty solid truck though! Look forward to watching your progress, as Coach's thread was a huge inspiration for me too (particularly because his is a 3600 as well, and his build was headed in the direction that I envisioned for my truck). Good luck, enjoy the ride. Maybe one of these days all of us can get together and have a AZ meet up.
A note on the wiring... I didn't think mine was real bad, until I pulled it all out. WOW, lots for broken wires and most of the sheathing just disintegrated.