Get the drill pads you will be fine. Only reason I'm going to order 4in pads for pc is because I already have the machine, other wise would order for drill.
Do strip wash and clay then let it eat. I was a little timid my first time polishing but after the first panel, I caught on real quick.
Edit: I started by working a section to large. Do a 1x1 or 1x2 and take your time. Work it till it satisfies you then move on. Set a large amount of time aside for polishing, especially if you have never done it before. I thought I could do it in 1 day...not lol