I'm pretty good with a spray bomb. I tried painting a car with it. I did it on a very hot day and the overspray dried and fell back down in the wet paint. It was an awful mess.
I bought some Omni paint of appx the same color and had it sprayed on for 100 bucks. The paint reacted with the spray bomb.
My advice is for you to sand and tape off the car yourself and pay someone to shoot the car. This is the cheapest decent job you'll get.