Not a bad idea to use CF rims since you don't have to worry about wearing out the sidewalls with the brake pads.

Corima makes some 45mm CF aero rims used by Campagnolo in the Bora wheels that are actually much less money than Zipps. $255 US for each bar rim. (you have to order them directly from Corima though)

Never used tubulars, but I hear the Tufo extreme tape is the way to go.

You do know that Campagnolo makes some Aluminum Pista wheels (tubulars) that have a 38mm profile with 20/24 spoke count. Big money though.