As people said, sort the brakes. 2500's are a good pad for fast road and light track use. If you want more then go for some Carbon Lorraine's, CR5's or 6's, these are unreal on the track! I'd just go for a good standard disc like Pagid, and good fluid.
Also, tyres, I really rate Federals RSR - They're cheap in comparison to 888's and are nearly as good on track!