Chilliwack to Banff: 10 hours
Chilliwack to Jasper: 8 hrs
I've become a devotee of the 5 recently, minimal traffic once north of Kamloops and ends up being faster access to everything north of Sask River Crossing, including Weeping Wall area. You can even climb some of the ice in Blue River if you can catch it with no avvy hazard. You can see the pillar on La Vrai Nature du Bernadette from the highway. Most of the other stuff is fairly well hidden from pavement.
Sadly though, they closed the Kava Cafe. And in general Valemount and Blue River are full of sledheads and heliskiers in the winter so it's not cheap to stay in either town.
Plus you can stop off at Wells Gray on the way up for a couple burns on Spray On if you feel like it.