If you have Campy 10 now, and you swap to Campy 10 compact, you'll be fine. They recommend a compact front derailleur, but I've got plenty of bikes with a compact crank and a standard double FD. I swap parts back and forth and never need to put a whole new drive train on. You're right - just get a 10-speed compact (you could even go with Chorus or Centaur) crank and a good mechanic will be able to adjust your FD to work.