Sorry, Velocity does not seem to offer Campy compatible rear hubs.

But this is a really exceptional buy: VO Hi-Low Cassette Rear 36h - Hubs - Wheels, Rims, Hubs & Accessories - Components with a Campy freehub.

With Wheelsmith DB14 spokes, Wheelsmith nickel plated brass nipples and a Velocity Dyad rim, a well built rear wheel will last many many years, even with more load than you currently carry.