I've driven from Edmonton to Kimberley and back, never on to Vancouver from there. I stopped in Invermere after leaving Canmore, Invermere has 2 CS-90 charging stations while Kimberley has none. If you want to continue down Hwy 95 and over to Hwy 3 you should be able to make it, it'll just take you bloody forever as there are a couple of stops that only have 30A charging. I think your best bet is to head back up to Golden after Kimberley.
Still waiting for the car, and plans are evolving.
One thought was to go Canmore -> Invermere -> Kimberly -> Cranbrook -> Ceour D'alene (Supercharger) and then take the supercharger route west through Seattle (wife wants to go to Seattle anyway on the trip) But this is still awkward, the Invermere chargers are CS90s so charge pretty well, but it's still a multi-hour stop, this wouldn't be so bad in summer as we enjoy wandering a town, but in November I'm less certain about this plan. Worse yet is the lack of charging beyond 110 in Kimberly, and it might involve a few more hours in Cranbrook at their slower (30A?) charger. (I think I can reach Ceour D'alene from there)
I think I may push to stick to superchargers on our first trip, skip Kimberly and just go to Vancouver, dip south to Seattle, and back North.
Though if I get the car before the end of the month that "first trip" may not be first anyway, I actually have some road trips piling up, depends on when I get my car though, I'll be in Merritt in a couple weeks, and I may end up in Invermere at the end of the month, and if I have the Tesla by then I'll be driving it (but I'll likely have the destination HPWC at Copperpoint if I do that trip)
I would REALLY appreciate a supercharger in Invermere, and one in Cranbrook...