The only reason for a larger rotor is to have a bigger heat sink. The 355/32 BBK Calipers almost clear the stock SRT rims so compare the Sterns with the stockers. I was using a 5mm spacer but Jane filed the corners of the caliper and ran the stock SRT wheels with the Stoptech's. You "should" clear the 332mm combo. As far as pads it depends on how hot they get and your braking technique. Start with what comes with the BBK. If you overheat the pads you will know. The pedal will fill a softish and the car won't stop as fast as it was. You won't loose your brakes but when the pads get past they're heat tolerance limit they will wear out quickly, ie melt. The light on the dash from the sensor in the pads lit up and I came in the pits to discover my almost new pads were gone. So you have a built in warning system already.

Les