Stick with the Campy... every DaVinci I have seen uses it. So I think that is the most "tried and true" setup for that drivetrain.

Wheels. I have the standard DaVinci/White wheelset on my old Santana. It is a good, tough, not too heavy wheelset. I liked them, they felt very surefooted in the corners. They are not as fast/light as the Rolfs, but not way off the mark either.

Brakes, rear disc alone works fine. F&R setup will work too... depends on what fork they give you stock also.