Out of interest, what did the rest of yours and your partners wife think of this? Will your partner cope well without her friends and family? Hopefully neither of you will get too homesick... Canada has a lot to offer which will keep you both busy I'm sure. As you will be working and the wife won't, make sure she gets out of the house as much as possible whilst you're at work. Get her joining clubs or anything, just to make sure she makes friends as obviously you'll make connections at work.
From my own personal experience moving to Oz I've met a lot of people who didn't do any of the above. My old mate from Uni got a job and made loads of friends, whilst his misses struggled a bit (mostly, in part, due to her not meeting as many people) so she got terribly home sick.
Regardless, you have a great opportunity, once in a lifetime so just make sure the 3 of you make the most of it.