Other than the rust, this sounds kinda like the '93 Audi I got recently. I'm *NOT* doing anything about the cc failure at this point and I'm sure not in a hurry to put a $10K paintjob on a $5K car
I wonder how the acidic portion of a decon system would work on the surface rust that's apparently started in the chips.
I had some to-the-metal chips in the hood of my Jag for about 20 years (until my painter decided he couldn't stand them and touched them up). They'd sometimes get a bit of surface rust started in them, but all I ever did was polish them a bit by hand (with regular, mildly abrasive, car polish) and wax them They never got significantly worse and the rust never got serious...after a few years they just didn't bother me any more and I started thinking of them as "patina" from the car having actually been used like a real vehicle.
So *I* sure wouldn't sweat the chips in this case either, at least not unless they somehow got alarming.
If any of them are really significant, I'd consider some very careful abrading to remove most of the rust, followed by treatment with a rust converter...maybe followed by some touchup paint. But I wouldn't go crazy trying to touch up every one of 'em, even though I'm sure there are people here who'd be all over that.
I can see putting a bit of clear on that dime-size spot, but eh...I haven't bothered doing that on my Audi and it hasn't gotten any worse that I've noticed. When I first detailed the car for the original owner back in '08 I did a tiny bit of wetsanding around the rough edges of the worst areas of cc failure, where I feared the paint was gonna chip/peel/etc. some more making the problem areas worse. I just "feathered" them in and then compounded so it was a smooth transition into the surrounding OK paint. Yeah, that did make the problems a bit bigger/"worse" in one sense. Since then I've just kept the whole car well detailed, including keeping the LSP healthy, and it seems to be the same as it was back then.
I'd really just prioritize keeping the car clean and well-waxed. Dirt will retain moisture, which will promote worse rusting.