What I always say when someone is take what might be a once in a lifetime trip, always take your widest lens and your longest reach lens.
Better yet, if you can, take all your lens for the camera you are taking. After all, you did buy each one for a reason(s), didn't you??
Have a GREAT trip! I envy you.
So, it's OK with you if a guy/gal takes 10 lenses and 4 bodies with them cause it's a lifetime trip. REALLY?