Had an overall better day yesterday.
Had gone to bed in Tuesday night expecting to pick up the argument on Wednesday morning. And we did. Culminating in a phone call which lasted ages and was basically me getting upset/angry and him trying to stay calm/wind me up by appearing reasonable 
Apparently all I do is ask him for more money and do I have any idea how having a new (rented) house is causing him to haemorrhage money
My constant reminding him of this being his choice is not helpful apparently.
It turned out to be a massive waste of time too as nothing about our agreement changed. And I went ahead and asked my lawyer to draw up the document we agreed almost a month ago.
It did, however, cause me massive stress and uncertainty which resulted in very little sleep, a very unproductive evening of holiday packing and, most annoyingly, loss of control of my emotions in his presence. I hate that I let my guard down 
and have very little patience with myself.
I'm under a very tight timescale as moving day is only a month away 
He had DC while all this was going on so perhaps that's why I could let rip and he couldn't.
When he brought them home later I let them in the house and stood outside with him and called a truce.
I can't stand the constant fighting for every little thing.
He was quite emotional because he won't see the DC for over a week and I just wanted him to give me a break from the fighting.
We left things a little better as I was able to (hopefully) reassure him (again) that I don't want to restrict access and have only the DC as my priority (as opposed to myself)
We're heading away today and I can't wait to spend some extended time with adults who like each other and me. And for my DC to have a good holiday. It might be the last time we can afford to go away like this with our friends and that is so sad. The DC think holidays are with this family as its all they've ever known. We've had the odd trip just ourselves but...
Anyway, I hope to have a break from this for at least some of the time I'm away. But I'll keep you posted 