If you choose a "medium" firmness polishing pad, it will work for both IP & FP without problem. No Question. While a cutting pad would have a little more cut, it will also not finish as well - after the IP has been worked a bit, it breaks down and essentially becomes a light,
final polish. With a polishing pad, I can easily use IP for my final polishing step if I work the products long enough. A polishing pad is also easier to work with than a stiff, porous cutting pad.
Again, go with the
Lake Country Variable Contact 6.5" white pads from pakshak or classic motoring accessories.
I recomend having two pads for each polishing step. You can get away with only one once you have more experience. When/if the pad starts to become caked on the pad, use a toothbrush to spur the pad - it will remove all the excess product perfectly! Once you get the pad wet, you will struggle with splatter.