@questi0n - I hope it goes well when you talk to him tonight. I would suggest thinking through the points you want to raise, and deciding which ones are most important to you so you can raise the most important ones first.
I would also suggest you sit down with the children, and tell them that they are going to have to start organising themselves and their stuff. As other posters have said, you need to teach them that it is NOT OK for one partner to treat another like this - and you also need to teach them the skills they will need, to live independently in the future.
By the time my three dses went off to university, they were all capable of cooking for themselves, doing laundry and ironing, planning their schedules and getting themselves organised, sewing on a button or taking up a hem, changing a lightbulb or a fuse - frankly, I would have thought I had failed as a parent if they couldn’t do these things.
I am not suggesting for a moment that I was perfect at this, from the word go - I had to learn about teaching independence too. When ds1 started at senior school, he went through a phase of forgetting stuff (homework, mainly) and ringing me and asking me to bring it to school - I was a SAHP and lived near the school, so it wasn’t much of a problem for me to do.
After the third or fourth time, when I met him at the school office to hand over the missing homework, the secretary came out and very sternly told him that I was NOT allowed to wander into the school willy nilly, and this must stop. As soon as he had scuttled off, she turned to me and said “I hope you weren’t upset by me saying that - you aren’t forbidden from coming into the school, but I am sure you have better things to do with your time than coming up here every time he forgets something - so I’d give you a reason to say no to him!” She was a star - and I realised that I needed to work a bit harder on teaching ds1to be independent.