Putting 4 pots on the front and Gti-r brakes on the rear is a bad idea, I speak from experience and I've crunched the numbers through a brake bias calculator and you end up with an inefficient brake setup,
(@
Bengineering and I have explained this in detail on page 2 of the N14 Rear Brake Upgrade Info thread)
Putting gti-r front and rear brakes on gives you a good front to rear brake bias that almost like stock,
I would recommend this, along with slotted and dimpled rotors, good fluid and good brake pads, and if you feel like it braided lines too