Heading from Ontario to Vancouver Island for the Winter

We would stay in Kamloops the last night before heading to Vancouver through the mountains going via Merritt BC.We have stayed in Salmon Arm and Revelstoke depending how the roads were and the avalanches coming home to the prairies.The flat way through the mountains is on Highway 16 through Edmonton and Blue River down to Kamloops.Spent 2 days in Revelstoke blocked in by mudslides one spring.Anything can happen,but I would not use highway three in BC you may not have much time to look at the scenery,very slow and winding,some steep passes.We also learned to get ferry reservations after spending a night on the dock.