After you get the $300 gun you will also need a $800 compressor, unless you will rent it. You need a clean place to do it, in the driveway will probably not be better than Maaco. Then there is the poisonous fumes. Then there is your inexperience and you are bound to end up with a pretty crappy job.
Find a local shop to just do the spraying maybe. Do all your own prep work.
