The 600 pilots in the next two years was a rumour propagated by your management during negotiations for the 777 and 787. Have you heard this since then? I didn't think so. With the price of oil hovering around $70.00 I don't think anyone will be hiring a great number of pilots for the foreseeable future so anyone contemplating going should expect to be very junior for a long time. No weekends off, no christmas off, no family birthdays off, and an uncertain schedule every month where you only have 4 days off that are guranteed. I would also guess that more A319/A320's will be leaving than you think which will put more people into the "b-scale".
As for WestJet, things are already slowing down here and for once we are ahead of the hiring curve with no new courses for the foreseeable future.