If I had a couple of days in BC, these are the roads I'd probably hit:
View Larger MapThis, of course, assumes pavement :-)
It also leaves out the Mable Canyon between Lillooet and Cache Creek, Fraser River (#1) between Hope and Lytton and 5A from Merrit to Kamloops. And if you need to get back to Vancouver in a hurry, I've always enjoyed the #3
That is a sweet route. I did a similar one a while back. Osoyoos to Princeton, 5A to Merritt, 97A through to Ashcroft, then up to the 99 and down to Vancouver via Lilooett. Was a great ride.