Dear Mr. SepAnx,

Congrats on your value to the industry you're in! I'm sorry life has presented you with a tough situation, but it seems like a good problem to have! Job offers are too few and too far between.
Unless there's information missing from your letter, I whole-heartedly recommend you bring your child with you and accept the job overseas. There's a world of new experiences that can come with experiencing a different country, and experiencing it as a child will surely be mind-opening! With your new wage (ten times your current salary!) perhaps you will be able to bring your mother along if she wants to come as well! If not, you can surely find quality childcare with such a large wage.
Unless the cost of living in this new country is commensurately high. In which case, ignore the above advice. Too often, we look at pure dollar values and forget to account for larger expense that go along with new jobs.

To sum up, yes, being with your kid is important. I recommend you stay with your kid. But kids can grow with new experiences, so, if you think the quality of life for your kid wouldn't suffer, bring them with you to the new place! Make a reasonable and thorough budget before the move, and make sure that your actual earnings will cover your actual costs. Use that information to move forward.

We're all making it up as we go along.

• @improv