So I am almost done stripping off all the old crusty powder coat from my rock sliders and getting ready to start prepping for paint. There was some surface rust under the old powder coat but nothing deep. My plan was to just take a wire wheel to the surface rust areas, sand the rest to scuff up, apply a self etching primer and then spray either some Rustoleum bed liner or use some Tractor implement paint. Will that prep and paint be ok with the rust or should I use something like POR-15? I'm going with paint instead of powder coat so that I can easily cover trail damage.