The best thing to do is figure out what it is going to take to live comfortably. I can honestly say taking my huge pay cut may have been one of the best things for me at the time. However, being in any job for a period of time is going to cause you to move right back up the promotion ladder. Sometimes taking a new job and growing with the company is alot more rewarding than staying stagnant.
Good luck in whatever venture you take, just remember family comes before all else in life. Which it sounds like you know that.