The guys I mentioned at Kal Koncepts do work for Jackson custom shop guitars, and quite a few others. Spaun drums, etc.
This time of year they are busy doing cars for House of Kolor, Auto Air, etc. for the big Sema show, but right after the show they might be slow waiting for the money to roll in from the big dollar jobs. Craig Frasier from that shop designs a lot of the air brush stencils that are out there. He's a stand up guy and really works to keep his prices fair. Long story short, I wouldn't hesitate getting a quote from them.
Where are you located? I hang out on a kustom paint forum populated by top level painters I can see if any of them are in your area.
As far as doing it yourself. Yes it can be done. I'm realy working on the process myself now of doing full automotive clears with pro level spray guns. Figure the price of a good gun to be $100-$400, a compressor a minimum of $200 to meet hvlp specs, hvlp compliant hose and fittings (yes there are specific specs), respirator, paint suit, buffing, wet sanding materials, the list could go on. The point is unless you want to do it a lot and really work at the technique its not worth putting together a pro level set up. You can do a lot with an amatuer's set up, but its a lot more work, while not saving a ton of money unless you skip out on the saftey equipment. Feel free to skip the saftey equipment if cancer, infections, and neurological disorders are your cup of tea.