Upgrading my trusty speed I tawt I liked the Campag Chorus groupset. I do, I`ve decided, but I don`t like the price ( around the £700 mark ). Is it possible to buy the Centaur set ( level below Chorus ) AND the Chorus shifters ( really like the look of those ). Is this problematic in any way ( I`ve never built up a bike ). The Centaur set is around the £400 mark. Ta for any comments provided.