I don't think I would send the info about coercive control, if you don't mind me saying, Grumpyoldblonde. I don't think I've ever seen a case on here where the abusee sends info to the abuser and the abuser has a road to Damascus moment about their behaviour. More usually they just start to pick holes in the info to 'prove' it doesn't fit with them and/or start using it to identify so-called abusive behaviour by the victim.
This guy is never going to accept his behaviour is wrong. He's grown up with it. Even if he wavered, his parents would reinforce the rightness of it in a heartbeat. I think you know now, Mo, there's no point hoping he will want to work with you to do what's best for the children, that's just a pipe dream.
By the way I'm concerned that he's going to pick up on the fact that you've asked for/spent extra money but the cupboards are bare. I think he will use this as evidence of your poor financial management. (I still think it's the right thing to do but I would be prepared for this argument).