will campy veloce work with chorus? 

Road Cycling“It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them.  Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” --  Ernest Hemingway

I'd spring for Centaur brakes.  The Veloce brakes are nearly identical to the centaur but the brake blocks are those one piece all rubber.  You can't change out the pads.  And holders are really expensive if you decide to get them later on unless you go with an aftermarket ones like from jagwire.