Alright, if you plan on building your way up starting with GA, bush and the like, then focus on it first. Get an instructor rating, or float rating, or anything else that could match the current market that you can reach with your skills and networking.
Get what it takes to get your first job, that's where all your mind should be now, many students found themselves stuck in the process because they saw too big too fast: they are not able to get a job in Africa for example flying bush because they have to reimburse large amount of debts, so they either have to stay with mom working on the ground/office, either leave for a pilot job with a nice salary, which is mostly not the case when they start with 200 hours.
After a few thousands hours of GA/bush/instructor/charter... you'll be able to answer the answers you are asking right now.
However if you really want to be inside a wide body right now, have a look at the requirements from the Cathay website:
Cathay Pacific - Careers : Careers Home
However be informed they don't take everybody who applies (obviously), so you really have to prepare the interview/test, and will take years (6 or 7 years after your interview) before you start as a first officer, because there is the training first, and the second officer experience.
Within this time frame I have seen people becoming jet captain in Asia...
Canada is one of the best country when it comes to aviation (Australia aswell), since you are in Canada why not having a look there first?
AVCANADA • Index page
If I were in Canada, 19 years old, no experience, I would move close to Perimeter right away and bang their door non stop for a ground position, I'd do my training with them, with the plan to be hired on the metroliner and be a captain on it within a few years, next step would be Jazz or the like, then/or Asia/middle east.
Perimeter Aviation- Winnipeg,Flight,Cargo,NDT,Air Ambulance,Medevac,Aircraft Maintenance,Charter,Flight School,Design and Engineering,Non Destructive Testing,Winnipeg Manitoba North,Canada
But what do I know?
