Brake pads: Winmax W5
Brake fluid: Pmu GFour-355 or Endless RF-650
Camber bolts: Whiteline or SPC
Oil Cooler: Majority run the Jackson Racing Oil Cooler. The Greddy will work well too. No need for the dual oil/radiator cooler.
I have seen boosted AT's without ATF cooler run 86cup with no issues.
Contact Counterspace Garage. They are a series sponsor and will be able to guide you and give you a great deal on what you need for your first 86Cup. Message CSG_Mike or CSG_David