I wouldnt be afraid of respraying the door. My last HC was damaged by my wife at the bottom of a door. Rolled a spare bare wheel into it and creased it. I was like you, def didnt want a resprayed door. But the damage was noticeable so I took it to a local shop who does show cars. He fixed and shot the door for not a lot of money and afterwards you literally could not tell. The right shop can make it right without botching it. Luckily for you the paint is basically new right now with no fading and so a respray shouldnt be hard to match. I'd much rather that than touchup over rust. You'd have to sand the rust out of there to do it right and that's just going to make it a DIY project that never ends well imo lol.