Congratulations on your purchase....I know winnipeg winters very well (a dry cold, right??)
Lots of opinions on seasoning a humidor. I roll with boveda and love it.
Buy a boveda seasoning kit. Follow the instructions and then maintain with the Boveda RH of your choice. I have a 50ct desktop that has been rock solid on 3 72% boveda packs now for 10 months. They're rated for 3 months, but I am now approaching 10 months with no issues.
Oh...and during winter, I put my entire humidor into a very large zip lock bag.
Next time I'm in town, we should meet up at Thomas Hinds.