Have you looked at the new Kona Super Dew. It seems to be what you're looking for -- scandium frame, carbon crank and bars, light wheels. It's probably cheaper than trying to turn the C'dale into that.

http://www.konaworld.com/bike.cfm?content=superdew

It comes with FSA RD460 wheels. Amazon claims they're 1580 grams, though I have to say I'm skeptical.