HVLP?

Hey folks. Im looking to buy a spray gun for my shop. We mostly do fab work but we also do rust repair, ect. Right now we dont really paint. It either gets sent out for paint or its rattle can/brush. I would like to start spraying things and need advice on buying a spray gun.

99% of what I spray would be semi gloss epoxy black. Nothing fancy just something I can learn with. I painted a few cars when I was younger and they came out ok so I have some experience but that was a long time ago.

My budget is cheap. Maybe 500 if its really worth it but less is better. I have a large compressor and a nice water removal system. (Desiccant?) can) and a few regulators so I think Im set on that end.

Anything you think I am over looking or should be looking at?

Thank you again for all your time and advice.