Chains in BC

Moisheh -- Granted, I don't personally know the terrain you will have to cross to get to the other side of those mountains. But it sounds like at present that you don't have any "Mother Nature" problems. Can't you drive that territory now (immediately if not sooner -- ha!) with your rig before the weather closes in and store the rig (or leave it with someone you know) on the other side of the mountains until if perchance the border opens up. Of course, that still doesn't handle the problem of your traversing the mountains again from home in snow in a standard vehicle with chains to meet up with your rig if the border surprisingly opens up.