Just painted my '98 C3500 Crew Cab Dually last summer. Great choice for my first overall, eh! Devilbiss Startingline guns for primer, HF Black Widow HTE for the finish coats, single stage. Used Tamco from the ground up. Sand/strip, epoxy, fill, prime, finish. Paint might be more affordable than you think! Top notch customer service, too!
http://www.tamcopaint.comI have pictures of the project if you're interested.