I really like the Lake Country pads that I have. I've also heard great things about the propel pads from exceldetail. I would get both large and small 4" pads. Use the larger pads for paint cleaners, sealants, liquid waxes, etc and use the small pads for defect removal with abrasive polishes. excel detail has nice combination packages that will give you a bit of each size.
For polish... well.... that's really an opinion. The poorboy's SSR series works well on a PC but produces dust when used. I personally use the optimum series on my PC. it has done everythign that I've asked it to do with no dusting whatsoever. The drawback though is that it takes longer to use the optimum polishes than other equivalent products. I've also used menzerna po85rd to great success on my PC.
Enjoy your new machine!