I use the same discs - 285mm redrilled Cossie disks although I had a machine shop to do mine from std ones
Assuming those discs arent warped then a proper clean up / light skim will work on them.
Use spacer brackets to mount the ATE calipers at 285mm instead of 256mm (or use V6 calipers with a spacer to inboard them a bit but those are heavier) then decent pads and decent fluid - Ive used all sorts but Motul RBF600 or RBF660 are both good.
I use Mintex F4R pads which are very good. I didnt get on with DS3000s as they didnt take the heat and started smoking badly.
Paul..