I know Carpi Moto in Italy sells a brembo rotor for half the cost of the power parts piece. Brembo just came out with a cast caliper that's also half the price of the billet piece. I would think that rotor (or the power parts unit) with GOOD pads will be good for aggressive street riding and the odd track day. I'm running EBC HH pads and stoppies are possible if you switch the ABS off.
Yes , I fitted front 100 mm Brembo on a PP ( Galfer ) 320 mm wave rotor and Brembo rear calliper . The rear is a straight swap , but you will need to machine ( CNC ) an adapter to be able to fit a 100mm calliper on the 80mm stock fork end . With the 100 mm calliper ( which came from a KTM 690 ) you will attach it straight on the higher fork end and the adapter will attach to the lower fork end . The adapter will continue another to allow you to attach the calliper .
You will also need to machine a 10mm bolt with 8mm x 1,25 thread for the top attachment .
Then you also will need to machine a wheel spacer and a spacer for the disk and special bolts to be able to install the ABS / speedo disk .