The AE program is not open at this time, although you are free to submit an application for the full ab-initio cadet course. From what I gather, it won't be open for a while. You will basically be betting on them re-opening the program in 13 months (assuming you successfully complete your CPL and multi-IFR exactly when they re-open the program), betting on them accepting your age, betting on getting through the selection process that takes up to a year, and betting on getting into the program in the end. I don't know about you but that's enough uncertainty for me to not plan on taking this path.
If you really want a career change and you really want to be a pilot, do your training in Canada and find work in Canada. But expect to work your way up, whether it is a non-flying position within a small charter company or flight instructing. The only advantage you have is a Canadian citizenship. But don't expect to fly big shiny jets within the next 3-4 years.