I went as far as Tromsø, Norway late last year and was shocked that most of their produce comes from the kind of place you might try flee from. Most of the fruit and vegetables I purchased had been shipped from places like Spain and South America. Basically if it becomes so bad these countries start to starve it won't be a priority to send food to the Arctic leaving people in the North vulnerable and, there are a lot of people up there already. You're not just going to move to some little village in Sweden and escape this pending disaster.
These large Northern populations heavily rely on produce and clothing coming from down South.
I did stay with people in Sweden who are kind of self sufficient, but if one looked closely, it was easy to see they still need solar panels, medicine, hunting equipment, cars, fertilizer etc, this is not stuff produced locally.
Best thing one can do for the next generation is change our ways immediately, consume less meat and fish, divest from fossil fuels, demand action from our politicians and stop having so many kids. It's pretty clear a population of 9 billion is going not going to work with current technology and attitudes.
It's easy to see isn't a problem anyone of us can run from, we're all going to have to pay the toll for what some call "endless growth".