Tyres = the stickier the better. Get something like Advan AD08 or Hankook R-S3 if you can. Not sure if they come in the 225/50/16 size. Wider wheels+tyres will be beneficial.
As for brakes, full fluid flush with fresh Super DOT4 (high temp >300deg rated) or DOT5.1 fluid. Pads, try QFM A1RM and new rotors if you need them. Don't bother with drilled rotors (they tend to crack with track use).
If you want to upgrade your brakes, you'll have to get bigger wheels (with big brake clearance).
I have GT-R Brembo front brakes, stock rear with A1RM pad and they stopped the car pretty well (Eastern Creek South Circuit, so no high speeds), but I have a shit brake master cylinder so I can't say how well they work compared to stockers. The bigger brakes does give you extra heat capacity though (I found the ABS would kick later with the Brembos). Wheels are 18x10 +20 (Nismo LMGT1) with 265/35/18 road tyres (need better tyres).
Not sure what suspension setup you have, but I run about -2° camber with 6° caster on the front and -1° camber on the rear (adjustable upper arms, caster rod). The front alignment will have a role on the feel and grip level while turning.