I grew up as an expat pilot kid in HK and now beginning the long and second half initiated process towards a family.
All is good so far as schools if you are willing to pay $$$$.
Now look at the price of schools, cost of living, transport, cheap to buy a MPV - get ready to pay tolls and parking(!).
I personally could not imagine trying to support a family in HK on a SO salary (even a DESO would be in the same boat and a lot of FOs).
So far as rosters - depends still on fleet. Honestly with a child I would be thinking very, VERY hard - you cannot be too fussy, it is great for a single, young person but personally I would suggest against a cadetship with a child onboard.
CX is not the be all nor end all for a career in flying. It is very good for those that suit their method of entry. If not - I would suggest other methods of entry into the "bright and wonderful" career that is flying.