Thanks guys it sounds like I'll have to look into respirators for this project. I have a decent 3M one but it may not be enough by the sound of it.
The cheap guns and all that are really good advice so I don't end up over spending.
What about water separators and all that for the compressor? I've never sprayed anything with the compressor so I'm not sure what I'll need for that. I don't plan on painting and clearing the car but I would like to get it epoxied. I figure I'll do a panel or two at a time at first to get the hang of it and then go from there.