Nice job. I would probably saturate the blue/cyan just a little and maybe darken it too. Not sure if it would work to darken the sky a bit without messing up the mountain though but you should try it and see. I think a little darker sky might help the Rockies stand out a little better.
the white looks a tad pink. Could add more interest if you has stood off the road at a slight angle so everything wasn't centered. Neg. space is great.
That much sky adds nothing to the image. I think the bottom quarter is interesting but it is completely overpowered by the sky, which is not supposed to be the subject.