I would use Fuji Superia 100, and Superia 400. I would skip the 200. Bring a 800 Superia as well, just in case some areas do not permit flash and the light indoors are dim.
I might just bring a Fuji Velvia 100f too. Slides just look better for landscape.
Dont ask me about kodak... caused I never use them, after 1 sad try with Kodak MAX.
For snow, it's easy to overexpose on the whites. With cloudy skies and a white landscape reflecting the light, there will be a lot of overexposure, so you may consider slower films.
For slides, there tends to be a colour cast for both Velvia and Provia on whites, so you may want to consider Astia 100 which is less saturated. However if you are into negatives, Reala is a pretty good all-rounder.