On a black car, general rule of thumb would have been to hit it with 106ff after SIP. And yes a white pad would be my choice. Yes, these spray on walk away type products are very easy to use, HOWEVER getting the paint ready for
PGP is still hard work, there are no shortcuts. I would have gone SIP, 106, PGP..To me, you have 2 very good polishes, a great 1-2 punch, so PPP to me doesn't even fit in to the equation