Hi Grumman,
I have worked for Air China (6.5 years) and am now with China Eastern (1.5 years). Given you are willing to work and move your family to China your will have plenty of options. The big question which can't be answered right now as I don't have enough information to go on, is what is the right one for you? Feel free to message me if you want some further insight into what I know about working here.