i have use FG400/SF4000 a lot in the past, it's a great combo.
HDcut/HDpolish is a good combo, IMO HDpolish seems to finish out faster than SF4000.
for pads i recommend a MF cutting pad (Meguiar's, Griot's...)
for polishing the LC ThinPro Pads are nice, i'd get Orange, White and Black. the...