welcome to sober recovery. this is a terrific site, with lots of peeps who can help you sort things out.
this is a tough decision. i would say that you keep the best interest of your children front and center. you are grown up, "formed" if you will. the decision to stay or leave will impact them. what is your BEST guess of which one will be MOST true: staying = good, or leaving = good ?
i would say, make sure leaving would not be due to spite, or wanting to hurt him, or "show him" or similar manipulation. also, because of the kids, i would say that your need to feel like you're making a statement, trying to heal, ending a marriage, or feel safe - important as all of those are - does not trump your children and their needs.
peace...