If you are a performer, and if you got cast in a Broadway show then this is an utterly devastating moment for you.
But, you know that this move would be extremely difficult for your family.
For a start, you won't be there for them as you will be working every night, and most days.
Your husband will be on an alien spouse visa, and therefore cannot work.
The school system is hard to navigate - some schools have 5,000 kids.
Who provides you with health care and what do they provide? I assume it is Sag Aftra but that needs a look, and the tier needs to be established.
I lived in NYC, and am good friends with many performers. If your post is true, then congratulations, as that it is a hell of an accomplishment - to be cast like that.
It is very hard to see how you could make it work though, without massive enthusiasm from the whole family.