If you're parking it outside, you may have to do what the Alaska
pilots do when it gets to -40 - keep the battery indoors. Use Tanis
or Reiff cylnder heaters, plus a crankcase warmer. You'll also need
some way to warm the cabin somewhat - gyros, tach cables, and other
moving devices don't respond well to subzero starts.

Be aware that if you go down anywhere without rescue within a couple
of hours, recovery isn't likely before you freeze - those prairie
provinces have exceptional wind chills. Check with local pilots -
they will be your best source.

On the other hand, once you get it started, your 150 will climb like
crazy :-)