In your Painting 101 you recommended using a 60 gallon 5 hp. air compressor. For me that kind of defeats the whole reason for getting a Concours spray gun which is designed for a home air compressor. I only have a 20 gallon 2 hp. compressor. Would such a small home air compressor give a satisfactory paint job, especially for a truck? Or would it only be okay for just painting the engine compartment and door jambs rather than a whole vehicle?