The last time I rode in this area (1986) there was no Internet and no Trans-Canada Trail, and my route at that point was back into the US through Cranbrook into Idaho at Bonner's Ferry. I haven't ridden in BC west of Cranbrook. From what I can tell in preliminary investigation, the TCT is still just a dashed line east of Kelowna, so my biggest issue is how best to get from Field down to Kelowna.
I've allowed about three weeks to cover the distance and I'm not out to bag passes. Quiet roads with shoulders and enough towns for motel stops would be ideal. I was hoping not to carry full camping gear, but I guess I could.