I am not a pro,but have alot of experience.My old srayer dose a better job than my HVLP.However the HVLP dose a good job and only uses half as much paint and paint is high priced now days so I use the HVLP,also the HVLP dose not get the over spray all over the place so makes clean up easier.As for the compressor you will just have to try it.It won't matter if you have to wait on the compressor when you are shooting primer and that will give you and ideal what the compressor will do for the paint.