Update from CTC: next selection dates will be mid-2017.
Not an easy answer...I believe the day you are hired at QR you are put on a seniority list as like many other airlines however IMO for cadets, after you reach 1500, convert your MPL to an ATPL, your experience will be worth more from that point on. With the training being 2 years, lets say another 2 years to reach 1500, and then another 3-4 to reach 5000+ with QR...you're looking like 7-8 years total, maybe more. You gotta also consider that their is an extensive process for upgrades, not all FO's will become Captains. You also have to consider operational requirements, everything from gaining a320 PIC hours (if you make it to Captain on a320), to foregoing that for widebody FO hours (if they need them at that time). Its a personal choice, mixed with the needs of the business....