I also recommend traveling south on hwy 1 through the Fraser Canyon. There is a provincial campground called Skihist and near it is a river rafting outfit called Kumsheen. Take a rafting trip on the Thompson and Fraser rivers, great fun. Farther south is Hells Gate with an easy turn off to the right. Take the Gondola down into the canyon. Interesting facilities down there. All of these can be looked up on line.
Heading back take hwy 3 from Hope to Princeton, Keremeos, Osoyoos then north up hwy 97 to Kamloops and back onto hwy 1. Busy area in the summer. You can also stay on hwy 3 and work your way to Alberta but there is a steep climb out of Osoyoos and Salmo.
If you return be hwy 3 out of Hope stop at the Hope slide, awesome. Also at Manning Park if you have a truck or dingy you can drive up to the Alpine. This can also be done at Revelstoke east of Kamloops.
Research the parkway between Jasper and Banff. One of the top rated drives in the world. It is good for any RV.