I am aware of only company that does chemical dip of cabs and doors in this region, they are in Ocala Fl. They are pretty pricey, but it would be completely stripped. There are a few companies locally that do media blasting, one or two will even do it on site. The cost is a lot better but you read "horror" stories about body panels being warped from the process.
My cab has considerable amounts of rust in the toe boards, steps and cab corners, all of which is replaceable with patch panels. My welding skills are less than stellar but I'm getting better. I have a friend that is a former body man and is more than willing to help with the panels and finish work. I just want to do it once and do it right.