I would take Doug's offer up if at all possible. Besides a great paint job you'll have a blast and learn far more then you ever thought was needed.
Have you checked out any motorcycle shops for their painters? I would avoid auto painters if they have had no experience with a bike frame. The differences between spraying a broad and gently flowing shape (like a car body) and that of a frame made of tubing is rather large. The powder coater I have used also offers a wet spray job at about twice the cost of PC. Not up to the grade of Doug's work but local to me and less $.
Some (like Doug has to me) will say that of all aspects of a self built frame that should be splurged on the paint is
#1 . Why? because the lay person will see the finish grade and assume the frame building is of the same level of skill. So a cheap PC or wet job will be stating the frame build is also of a cheap and cost savings manor. Andy