Hi Han,
I'll second, third, and forth, the 4x5.... if you get the opportunity, take the short trip to Lake Louise and visit the old Chateau Lake Louise. I believe it's now known as the Fairmont Lake Louise (Jim may know better.)
Anyway, there's a shot down by the water facing the mountains that is a "must see and photograph."
Lastly, don't forget to take some bug repellent with you as the mosquitos can be quite annoying if you're shooting by any of the marshy areas.
It's a beautiful part of the world and I hope you enjoy your visit.
Cheers
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