OP, it sounds so much like my marriage. I think you need a solicitor with experience of abuse. Rights of women maybe able to you with local solicitors but their approach is more important than location..
Take your H at his word, believe him when he says he will make your life hell.
At the moment you are still trying to make sense of this and assuming he will want what is best for the girls. What you will learn is that he has contempt for you (nothing that you have caused) and he will want what is best for him, he will want to punish you and he will have to win.
I am several years down the line, yes it was horrible as I couldnt believe how vicious Ex was and how uncaring but I now have a lovely home and very happy children. I have learned so much about toxic people and how strong I am. Toxic men always target strong capable women as underneath they are very weak damaged men.
Post divorce Ex has more money than me but I have peace and contentment and the love and respect of my DC.
It doesn't surprise me that he focusses on money as to him it equals power. You are likely to get more than 50% due to DC. A good solicitor can apply for interim payments so that you have sufficient money to live on.
Do you know the value of assets?
One thing I would recommend is to surround yourself with people who believe you. Maybe get a counselor for support. Read books on abuse, Why does he do that? Verbal abusive relationship, Patricia Evan's.