A few of my thoughts:
- From Vancouver, I assume you are taking the Klondike Highway and then Dempster? In that case, the longest gap between civilization points isn't much more than 3 days. If it were me, I'd probably still go for fruit, crackers, pb&j, cheese, trail mix, dried jerky/fruit, etc and augment as I find it on the way.
- I did do an experiment with MREs prior to my 2016 start in Prudhoe Bay. They work but in the end I picked up freeze dried dinner + breakfast instead. Partially because of the weight/space, but I also liked the taste better. I bought a box of 12 MREs and am still eating through the remainder on occasional weekend trips.
- If you are flying, check carefully on any potential restrictions on what heat sources you can bring.