I have a mid 80s chevy pick up that has rust spots where the paint has been chipped , some areas where the paint is peeling from a bad paint job that I would like to repair. Whats a good process for taking care of the rust where the paint has been chipped? I know taking it to get painted would be best , but I am not ready to drop 3-4 grand on paint at this time.Plus I want to take care of the rust to make sure its taken care of correctly and will not come back a year or two after painted. I am thinking touch up gun ,epoxy primer, and a quart of paint that I will use for final paint job( original blue ) . I am not wanting a perfect back yard paint job. I am looking to treat rust and peeling paint and seal metal back up. Thanks