If you don't have a lot of miles on your wheels, I'd go with the ones you have and replace if and when needed. If going with new wheels, you'll need to decide on cup and cone vs sealed bearing hubs , straight gauge versus double butted spokes, and the rim of course. The velocity dyad and mavic A719 which others have mentioned are both fine rims. I'd add the DT Swiss TK 450 to that list. Trying to save weight on your trip will make life easier on you and your wheels.