Cracking effort!
Tempted to give this a go next year if they do it again!
I would not go to Godspeed for a track brake setup at all, he uses pattern discs and then cuts grooves in them, and they warp with enthusiastic use, let alone track work.
Good pads and fluid will help along with some proper ducted cooling, moving up to a 2 piece disc and bell something like Performance friction disc or AP strapdrive will help a lot, or if money is no object I would look into some AP's or Alcons. A brake stopper and braided lines will help pedal feel but not overall stopping power, good fluid like PFC 665 or motul 660 dot4 will help improve the wet boiling point (the only figure your interested in!)
As Ryan said if I was splashing the cash I would talk to Alyn he will advise you what's best to suit your budget