Hey Bklyn, I'm sorry he has made the choice to take a job so far away. Sorry for your little girls, too.
Yea, he needs to make arrangements for his time away so that you can have a life.
And dont worry about how you sound to him. Who cares? He no longer matters in your life except how it relates to your girls.
I am not saying to be unnecessarily nasty to him because that isnt who you want to be nor is it good for the relationship between you two as coparents. But, that doesnt mean he gets to say whatever he wants either. You matter, B.
Now, take a deep breath regarding the job. Dont get upset. Figure out what you need to do in order to deal with it. Then approach him from a place of strength.