I currently have GG ROP & PCXP, 3.5, 5 & 6in BP, 4in and 5.5in LC Cyan, Tang & Crimson Pads, 5.5in Surbuff Pads. I want to add Megs MF Pads, Do i need the 4in pads or only the 5.5in pads? Do i need the finishing disc or just the cutting disc?? I use Menz polishes sip, 85rd and 106ff, M105 and...