I would really recommend taking a trip together before making any concrete decisions - that way, you can try moving without it actually becoming permanent.
You can check out the neighbourhoods you'd most like to live in, see what the climate and the weather is like, figure out if there would be any issues with employment for your husband and education for your kids, etc. - and only move from there if it seems like a good move for your family. But in any case, it sounds like a really fun and adventurous option - I think you would have a lot to gain from the move.
In my experience, moving to a new place can be a great experience for people who are struggling with feeling like they belong. Moving to a new place allows you to reinvent your image, and it also presents you with a new set of challenges that you can use to distract you from any other problems you might have in your life.
However, that kind of a move could also be really overwhelming, which is why it's important to be careful and have a well-developed plan for such a massive change. A major decision like moving to a new country shouldn't be taken lightly.