If he is digging his heels in about the job, any attempt to talk him out of it will be seen as your controlling him. However, I am handing you a bottle of super-glue remover. Explain to him your fear that you and the kids will not be a priority. Work on a schedule that includes Corri and family time so that you can feel secure.
Reading this reminds me of when H wanted to move to a larger house. I knew it was a bad idea but he was so locked into it I felt I had to let it happen. Turns out I was right...a lot of my fears did come true, but we worked through them ( I always knew I could sell even though it would be uprooting once again) and as it turned out, there were a number of benefits to the move.
Hang in there...time will reveal all...sometimes things just have to play out. Talk to H about your insecurities and protect yourself as best you can.