I'm sure there are plenty who have put potenza on a C-dale and absolutely no reason you can't. Messing with BB30 isn't any fun though not all that hard and a campy crank can be nice if you just want a matching group on the bike. My wife's C-dale CAADX tiagra came with an FSA omega crank which is heavy and shifts poorly and the BB was already a little crunchy after a light cross season when I found a carbon Campy CX11 crankset for 125.00 new. So now her bike has Tiagra chain, cassette, shifters, ders and a campy carbon crank, took almost half a lb off and shifts better. I've been thinking a chorus or potenza group would look good on it if she wanted. I would search UK sites or someplace like bike24 for the chainring, it will be way too expensive here in the states.