Don't be lazy, the guys giving you info are taking their own time to do so but a lot of your questions are easy to find.
Look up on a facinating device called google,
"Forgiven (able - ish) loan"
Other forums for expats living costs in hk.
Real estate to find how far 10k HKD will take you so far as rent is concerned.
Hong Kong Pilots Allowance.
While you are there check what "SJS" is, have a strong coffee (or spirit) and talk to a lot of others are not 4 bars but 3,2 or 1 (does it exist comparatively package/experience wise?) bar guys with other airlines and make an objective comparison considering advancement and lifestyle for your circumstances.
You have to be a big boy and find answers that are more to the point elsewhere.
BD