There have been so many helpful suggestions I wanted to follow up on what I have done (so far).
Knowing that the first week in July would be difficult to get reservations, I jumped in when the booking window opened and got a site for that whole week at Johnston Canyon in Banff. Sort of centrally located so we can do the touristy things at Lake Louise, yet still within driving distance of places like the parking lot for the Lake O'Hara shuttle bus and various hiking and biking trails even as far as Canmore. Then I've got four nights at Wapiti in Jasper to explore that park as well as Mount Robson.
So we'll head to Vancouver first, hoping to arrive by the week of June 18th. We'll then have from then until the 30th to explore Vancouver, Squamish, and Whistler and then travel eastward to Banff, camping, hiking and biking along the way. After Jasper, we'll head west then south on some undetermined route to eventually head back home in mid to late July.
I'm so appreciative of all that everyone has posted.
Ken