As HT mentions below two issue pop up with any scheduled exercise, the fact that you have uncontested waters, and can pre-book your carriers.
Given the RCN doesn’t have any RoRo type transports, you are relying upon an external source for that. Something that you cannot do in wartime, as:
1) no controlling them means you may not get them if they are even willing to do #2
2) they may not want to go into a potentially hazardous area
To me if Canada was serious about the movement of materials to anyway other than North America, there would be some serious efforts on the part of the CA (and even RCAF) to ensure the RCN had some transport ships capable of roll on, roll off.