For $900 mate you are better of upgrading the brakes from the standard ones to the slotted rotors and some decent brake pads and no I am not talking about Bendix crap. There is a group buy thread in the main section for RDA rotors. I bought mine from that group buy about 3 years ago and still going strong, even though it has seen a few track days now. I remember paying $480 delivered for all 4 slotted rotors. GSL Rallysport sell the QFM A1RM brake pads for $238 delivered for all 4 corners. I personally use the Penrite Sin 600 brake fluid and highly recommend it to anyone, especially after the way it goes on the track. They are about $25-30 for 500mls, and I guess for a system flush and all changed you will be needing around 1L. So that all comes to roughly $780 and with the $120 left get a carton of beer and a few boys around, throw a barbie and it will all be done in no time for sure.
I won't be chasing big power just yet. Remember that with more power you will need better stopping power