Ludog - I am so sorry to hear your news. I hope that you all manage to stay strong.
NotSo - I have divorced my alcoholic H because mine & DD's lives were becoming a living nightmare.
I would say that you need to start detaching from his behaviour and fast - because you need some vital head space before making any major decisions.
When you are in this continual cycle of mad behaviour (eminating from living with active alcoholism) you become as sick as them. Your reactions lead to threats that you will never carry out (one more drink and we're through etc etc), or behaviours that punish him (silence/manipulative behaviours).
When you are living in the madness, there is no way you can make logical sensible decisions. You need to start focusing on yourself and your DC's, and once you have stepped back from it all, only then should you start making decisions about the future. You can't fix him - you can't be responsible for him.
I read your other thread and saw lots of really good advice about you going out and getting your life back. Once you start doing this, your children will benefit as you'll feel so much better.
If you have read back through this thread, you'll see that Al Anon has been suggested - you should look them up and you'll find that there are many people in exactly the same situation as yourself. It helped me to make rational decisions that ultimately I was informed enough to make. CAT me if you want any further info.
You have to start looking after You. Your children don't have a choice in this situation but you do.
I can't tell you how fabulous life is now - DD does still see her daddy (he has moved back in with his parents) - but she is a well adjusted and balanced child who understands that her daddy has an illness that made him behave the way he did.