Typing from the bleachers here...
One of the main advantages of using carbon is for weight savings. The stuff is very expensive in comparison to glass. To me, it doesn't make sense to use carbon (especially alot of it) in a hand layup. Unless you are very good at epoxy work, you are almost assured to use too much resin...which will negate the weight savings you were hoping to get from the carbon in the first place. I feel that carbon fiber should be bagged in order to gain it's full advantage.
My other "issue" with it is the fact that it's so stiff. One of the best attributes of a wood boat is how it rides in comparison to a "glass" boat. It just seems that some of that soft wood feel would be lost with carbon in the hull skin. Maybe that's the wrong way of thinking, I don't know.
With all that said, you can get an aramid/eglass blend that might work better for you. I suspect that it would be less expensive than the carbon weave. Regardless, you may want to consider adding glass over top just so you don't have to deal with sanding over aramid.