Wellness is pretty easy to find. I don't know if Pet Value is in NS but they carry most of the good brands; solid gold, performatrim, wellness, and others. They also have lots of Royal Canin. Also if any pet stores near you order from Freedom pet supplies they might order wellness for you.
Whatever foods you decide on, make sure that one of them is a food you can buy in numerous places and not something that has to be ordered in. That way, if you run out of the mix there will be one food that you can easily find.