I think you'll be just fine. You're brave to stand up for yourself and your children. I am sorry that it has come to this, though. I would say that hopefully it wakes him up, but I understand that this might not happen - and you also might not care for that to happen any more, regardless.
You've never lived on your own? I remember when I left home at 16. It was the lack of eggshells, the knowing that no one is going to yell at me for anything at any given moment, that felt so peaceful. It was unsettling at first, but mostly I just felt relief. You're also only 43 :) That is so not old, and you have so much living to do!
Hoping for the best for you, (but you're going to be fine with or without my hoping it)
Tammy