I'd share my experience with Campy for touring as it seems you might get some use out of it.

Some 6 years ago I built this bike from scratch, with Campy Veloce 10-sp shifters, Campy FD, Sugino 46-36-26 tripple in front, a Shimano Deore LX RD, augmented by a proper Shiftmate, and a 11-32 9-speed Shimano cassette.
Its purpose at the time was for very hilly (Western NC) long road rides 70%, and forest roads 30%.
It behaved like a champ, and I rode a bunch of pure MTB territory on it, until I decided to "simplify" it by turning it into a double - by offsetting the BB a bit, and using a 46t and a 30t ring on the Sugino spider.
This resulted in subpar front shifting (the Campy FD obviously had difficulties), but it went back to normal once I ditched the Campy FD, and replaced it with a Shimano 105 tripple FD I had in my parts bin (a 5603 I think).
Years passed, I had other bikes to keep me happy for shorter rides, and decided to turn this one into a light tourer. It meant going back to a tripple in front (46-36-24), and a 12-36 Shimano 9-speed cassette.
This is what I tour on now, and am super happy with the setup. Especially after I got rid of the 700c wheels, and built my own with 650b wide rims.

What I am telling you is that you might want to keep the Campy shifters, add a Shiftmate, and combine this with Shimano derailleurs and cassette (10-sp perhaps). The Campy shifters can't be beat and I like them much better than any bar-end shifters.