I'd go with internals that can take a lot of punishment like Phil Wood hubs and BB and a Chris King headset. For the gearing, I'd probably go for 3 x 8 shimano stuff. For the cantis, I like the new shimano cx series. For the crank, I'd go with the trusty Sugino triple. For bar, stem, and seatpost, I'd go with nitto. For rims, velocity or mavic touring rims. I still haven't quite figured out which pedals to go with but I'd probably go with one of those double sided Shimano pedals (flat on one side, clipless on the other).