Trip to Banff, Lake Louise, Jasper: advice?

Dress warm for camping near the ice fields. Every time we travel hwy 93 in the summer, it has been snowing @ the icefields. I hiked them as a kid. Now I stop for a token picture and move on. Re. Jasper. Whistler is our cg of choice. We'll be camping next to the river, at Wabasso, when the kids are older. Our annual must see are pyramid , Maligne canyon, & Athabasca falls.
We would head home down hwy 5, & spend 2 nights at Wells Gray prov park.