Bazbogan,
as a new joining SFO you will make roughly 51,000 HKD
School fees will likely run a minimum of 5K per kid a month (for a average school) up to where for a really good school.
Rent is at the very least 10-12K + power (1.5K) water, cable ect... (2K)
So at a minimum over 1/2 your salary is out the door and you haven't cracked a
VB yet..
Tax will eat about 10% in that bracket aswell.