YOU and your 4 kids are the priority, Sister! Always remember that. Just like you got this one, you'll get another, maybe even better-situated position. Take a breath, chart your course carefully and know, as my grandmother always told me -- "Debi, if it's for you, it's for you, and NOTHING will change that!"
I was watching "All American" last week and Coop laid out a line I'll always remember, "Keep your chin up, so your crown, don't fall." Keep that in mind and you're gonna be just fine.