With 2 small children, a non-Brazilian wife and a secure flying job here in Florida
Not as a commercial pilot but as someone who made the move 10 years ago your answer is right there.
However bad you think your current situation is, moving to Brazil would not be a good idea. When I came here my children were grown up, I was (and still am) married to a Brazilian, we had property here, and I already spoke fluent Portuguese, so I would do it again. Under the same conditions as you I certainly wouldn't have made the move.
TTFN