Hon, you are too far away for me to help, but perhaps you could enlist some friends to come in and help you out.  Who will have the first three when baby # 4 is being born?  Perhaps you could get someone to come in a couple of hours a day just so you can sleep.  You will be of no use to anyone if you wear yourself too thin.  Best of luck to you.  Bobbie

my suggestion: punish and reward psychology. I don't mean you should buy them things if they behave well or lock them in the closet if they are bad. But words mean allot. They should learn about some discipline. I mean it is easy to preach here, when I don't have such a problem, but the punish and reward psychology program was very successful in some EU countries.

And a spank from time to time would be good. ;-)

Good luck!