I gave up on more polishing for now. Yesterday washed car, did some more clay bar in a few spots, then applied sealant everywhere except hood and front bumper. The polishing did make the car look so much nicer, but I didn't polish enough to get out all the swirl marks and didn't finish with the fine polish to provide maximum shine. Plus I found so many little dots of polish sling from last week and cleaning it up was a major hassle. My mistake was probably lifting the pad off the surface while it was turning, in order to polish small areas. Next time will try that at a much lower speed.
Also filled in a few chips with Dr. Color Chip and glued little rubber pads to the back of the license plate holder so the screws wouldn't keep scratching the paint. 3 out of 4 screw holes were missing their protective rubber pads. Tomorrow or this weekend I'll apply wax on top of the sealant and see if that makes it look more like liquid metal. In a few months I'll go after the swirl marks and scratches again with the Griot's RO.
For Lake Country CCS pads, is the best pad for Meguiar's 105 is the yellow (most aggressive) or orange (medium) pad? Or does it depend on the scratches?