Restoration tips

Hello Partypeople, I have a question. I have removed almost everything from the inside of my ́56 Lincoln. Now I am getting rid of the sand that has accumulated everywhere. I also wanted to make cable new… The real problem is: I have very light rust spots on the two doors. Not eaten through, but the paint has just discolored. I hope you can see what I mean in the photo. These “places” come from, among other things, that the rainwater on the Schei b) Then I wanted to remove these rust spots with fine lubricating gel paper and then paint them with some rust protection, as well as clean up the drain holes. My question(s): Has someone ever done this with the seals and has a tip? -What kind of paint should I take? Thank you very much in the first place. u. Lennart