They would do very well with ceramic pads, if you can keep them hot enough. I did that setup on a car and I didn't like it on the street. The brakes didn't grab very well until they were glowing hot. The lack of break dust was nice though. On a track it was great.
Unless you are running a really aggressive pad on the street, I wouldn't bother going with iron rotors. The OEM, Galfer and EBC with sintered pads will give you more than you need for street riding.