your children over the next 3-5 years, they won't want to be with you by then. I have seen way too many examples in which mommy wanted to settle down first then take the children from China. In all the cases I have seen, the children no longer love their mums after a long period of time.
Having children means sacrifice of part of your own life or dream. If you cannot let go of some of that, you are losing your children for good. You want them? You should take at least one here now no matter how hard it is. Otherwise, you have a job later, but no love from any of your children.