I do think the pro's are the way to go.
I recently did mine with a product similar to, but not u-coat it. I was waiting for the GT to arrive and just decided to do it one weekend on a whim. The stuff looked great and still does except where you park. It leaves brown tire marks even after 90 days.
I keep moving the cars around for various projects and now it looks like poop. I called the company and they spent an hours with excuses and everything I could have done wrong. I finally got to a supervisor and he said the paint was not drying hard enough. He suggested I clean it again, sand it and re-coat the brown spots, then go over it with their clear coat product. Which he agreed to pay for along with all the other products used. The stuff was cheap enough, it's the time that you can't get back. I may tray a couple spots to see if is solves the problem, but am pretty close to giving up on the DIY part.
George I would like to talk to your guy. We are real close maybe you can shoot me a PM with his number. Maybe you can get a referral bonus to buy more cool GT stuff with.