The aviation sector in Hong Kong is incredibly difficult to navigate. While I do know of people who joined CX as SOs in their late 30s and even 40s, the career stagnation during the SO tenure (not to mention the constant effects of jet lag from operating during the window of circadian low), can make it a difficult position to hold. Also, one would not have an income during the cadet program, and will receive a reduced salary for several years after cadet graduation. If one holds a lot of cash on reserve and a Canadian passport, I would say either to go to Canada and build an aviation career over there, or perhaps consider the HKIAA program, since it gets you into the right seat right away assuming you get hired.