If you'd your willing to spend the dollars - Pagid RS42 (blue) is what you want (Competition Friction/V-Sport). Very very progressive feel, not hard on rotors, come on straight away even with serious ducting and perfect heat range for tarmac, particually considering you guys won't see the super long targa stages.
I used to circuit race the GTSt on Hawk Blacks, they were good but far too bitey for the road even if your running ABS. I've used the Pagids on my 200SX, GTST and GTR and they are simply awesome.