I'm no bodyman but my brother is and he's helping me with my body work so I'll tell you what I've learned so far.
The prep work(I.E. sanding and block sanding) is mainly gonna make or break your end results. You will spend countless hours,days or even weeks just getting the body ready to shoot paint on it. My brother spent 2 days blocksanding just the pass door because we could see a childs handprint in it around the door handle. Before we started sanding the door looked perfect, it is amazing what you find once you start sanding!
The red thats on the SC is very expensive, 1 gallon cost about $300 for the basecoat and that doesnt include the clear or the primers or any other supplies you will need such as countless sheets of sandpaper.
A ballpark figure just on paint and primer is around $800.00 and thats just getting started. I used to think paint jobs were way overpriced, I dont think so anymore!
There is no way in hell I'd do it for a living, I'd starve to death!
When it comes down to it blowing the paint is the easiest part of the job. But it does'nt matter how well you can blow the paint if you did'nt do your prep work good. Every imperfection will be magnified by the new paint tenfold.
Think long and hard before you do this. Its far more work than most people realize.