Search around for recommendation on cam sizing, afterall you don't want to go too big if you still want it to be a nice street car [big cams = high/lump idle, lack of low-mid range torque/power which the F20C already lacks of, depending on aggressiveness might need to increase redline therefore stress on valvetrain and internals = $$$ to upgrade parts] then again mild cams don't give that much peak power increase though they generally do improve the car overall.