You're doing great, OP. Go easy on the celebratory wine - you're going to need a clear head in the days to come. He's not going to gracefully accept defeat, so steel yourself for all manner or tricks and attempts at emotional blackmail, trying to get you to engage with him. Sounds like he's already thrown a few, but you've already given him more information than you ever owed him. I don't believe that the papers were unclear about how he should respond, but if he needs legal advice, he should speak to a lawyer. If he needs a place to live, he can ask his sister: she certainly owes him one! And if he's in emotional distress, he can speak to his parents, or his friends, or the Samaritans... Frankly ANYONE BUT the wife he has abused.
Keep your girls close right now. I don't mean physically close, but try to keep communicating with them. Talk to the FP coach about how. Warn their teachers about what's going on: it might not be you they choose to talk to about it, and it would be good to have someone in school keeping an eye out for any signs of stress. I expect, at some point, your ex (yes! He is your ex now!! 
) will try to poison them against you... Maybe the story about drinking, maybe blaming you for the separation, maybe telling them sob stories about his suffering. Just keep being their stable, reliable mum, be as honest with them as is healthy, and you will weather it.
Don't blame yourself for not doing this sooner, or dwell on the ways you could have done it differently. You have done a bold, brave, fantastic thing for you and your girls, and you have a whole lot more happy years to look forward to, together, than the bad ones you've left behind. Be proud.