We did almost the exact same ride last year, up the Icefields Parkway to Jasper, then back. Unfortunately there was a fatal accident just ahead of us on the Icefields Parkway, and we got stuck for about 6 hours, causing us to miss out on taking the Jasper Tram ride...the good news was, we were stranded right in front of the Lodge so we had shelter, food, etc.
If you would like the .gpx files from our route, send a PM with your email address. We found some great roads up there by using the "Companion" books and maps.