Time for a glass of wine.
Let's just worry about current issues. Your PCS is far away, so no worries abut that. Plus think of how cool it will be to explore the Northeast with your kids AND they'll get to make snowmen and go sledding and skiing. It will be a great experience for your family.
My guess is we won't be without pay for too long. In the meantime stock up on budget food. The kids won't even notice. Don't stress over Easter, you can go super budget there too. Again, your kids won't notice. It might hurt you, but 4 year olds have pretty low expectations.
The deployment sucks, but it will go by fast if you keep busy with the kids. I don't remember....is this your first deployment?
Where does your Grandma live? CAn you go visit her?