From what I've heard, Rotora is a cheap Chinese knock-off that only looks good. I don't have any experience with it, that's just what I've heard.
I know Howard Coleman had been talking to Racing Brake about making brakes specifically for the FD. They've had some on the market for the past couple years. That's what I'm getting when I get mine. I think they have a big rotor for the back but I don't remember if they have a bigger caliper available.
Best of luck!
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