One of the more obvious anomalies in moving to the sub-arctic is the daytime darkness in winter and midnight sun in summer. Light, or rather a lack of it, can have a potentially huge impact on your emotional and physical well-being, which in turn may affect your relationships and down you go (depression can sneak up on you)... have a chat with your Doctor before you go, taking vitamin D is essential; acquiring a S.A.D. lamp is recommended.
Another factor is the climate. Have a plan to get involved with the community, whether through work or volunteering. Enroll your kids in fun and active diversions. Take up a new hobby. The winter climate being as frigid as it is (-30 to -50 C), for as long as it is, means you'll likely spend a lot of time inside your igloo.
So, little winter light + cooped up = an interior decorating challenge. I am up to the task (interior decorating is a passion of mine). I researched what others who live in these climates have done and will share my findings in upcoming blog posts. If you never thought interior decorating was important, think again. It has the power to affect your emotions and thus your outlook on life. Beauty inspires and revives; ugliness is a usurper of life.