You can use a PC orbital with different polishes but it will take forever. If you know how to use a high speed/rotary buffer i would do it that way with a wool pad and some compound. The rotary buffer can be very dangerous to your paint if you do not know how to use one. If you dont know how i would recommend taking it to a reputable detail shop. I wouldnt pay more than $300 dollars for a compound on the whole car. We do a 5 step compound on cars for $285 and takes about 10hrs with breaks and all inbetween steps. Goodluck man!