Have you been fitted for frame size? The point cs1 makes is true, you might have trouble finding stock sizes that fit you, regardless of frame material. I'm riding a 63cm Cannondale aluminum frame with carbon fork, and I have been thinking about a new bike. I'm wondering if a Synapse would be good for me, it's full carbon and comes in 63. You could look at Calfee, he'll build anything you want from carbon.