I’ve been detailing my vehicles for several years and have used various pads and polishes. I don’t do it for a living. It’s a hobby of mine.
My goto used to be Megs 105/205, but I’ve moved on a couple of years ago. Nothing against it, they just produce too much dust in my opinion. I have moved to Sonax and Jescar. I use Sonax Cutmax for heavier cutting and finish it with Jescar Micro-Finish polish. I know Megs have come out with newer versions, but I haven’t looked back once I used Sonax and Jescar (Menzerna).
For heavy cutting, MF pads or blue (Rupes) foam pads would be fine, and yellow for finishing. Color will vary by Mfg, of course.
What I would do is do a test section and see how the paint reacts. As reference, paint on my truck is about average. Not soft nor hard, and I can remove swirls with a yellow/orange pad and Micro-Finish very quickly.
Since you have light swirls, a product like Sonax Perfect Finish would be ideal. It’s a single step polish that will remove light swirls and finishes really nice.
As far as equipment, I’ve started out with a Griots years ago, and recently upgraded to a Rupes LHR15 Mark III (5”). I also have a 3” and a 1” polisher for intricate places, etc. The G9 seems like a sweet polisher. You can’t go wrong with Griots.
Cheers,