Hi,
I'm surprised you haven't gotten any responses. I think you'll need to outline the mission profile that you're looking to fill - flying in the north has many different factors and you'll see that most small operators have a vary diverse fleet for different mission profiles.
Outside of Buffalo Joe's flying circus, northern operators have an extremely wide range of aircraft from a single engine Cessna to First Air's 767. Gotta remember that the land area is about the same size as Europe, so not a one size fits all matter.
Also may want to try a message board called AvCanada - lots of Canadian pilots there - just be prepared for the standard unhelpful internet drivel that tends to cloud helpful responses.
Sounds like it'd be a pretty fun project though! Best of luck.