Denter would do his work and give the car to apinter , he’ll scrap off the rust , buy him a wire brush attachment for his drill , as painter Ustaad ki jaan jaigi raig-maal marnay par , (after the project get your attachment back) than Do your rust prevention stuff, as described by Xulfiqar bhai alot of times . I might visit your car soon .if its ok with you . About paint : kapci is a good paint brand , recently got it sprayed on my margalla.