K.F.
My advice will basically be all about packing. I love packing.
For your move, I would advise that you begin to pack up everything you don't use daily. (Holiday china, summer clothes, books, etc). Clearly label all boxes. I have two methods of labeling.The first involves, the letter for the room the item is designated for followed by a sequential number. The second method involves just numbering the boxes and on a separate piece of paper writing down the boxes contents. I keep the primary list in a moving journal which I keep on me at all times. It contains dates, times, phone numbers, everything I gather about the move. Mostly I use both methods and it also helps with storage.
I also make a point of packing my dishes in towels, washclothes, sheets, curtains, etc. This method kills two birds with one stone. When moving I bring the family towels and sheet sets down to two each (one in use and one clean and ready to be used next). These are the last things packed and the first things unpacked. It makes setting up the new home faster and most efficient.
I let the kids, even as little as yours pack their room essential boxes with their favorite books and toys. This is also packed last and unpacked first.
The greatest boxes in the world are the boxes which house reams of paper. They are sturdy and come with a great lid. My job has tons of them and if I just take them before the cleaning people get to them they are FREE. I stock up.
When I bring boxes home, I begin to pack them up over the weekends. This way I'm not overwhelmed with that responsibility on top of everything else.
For the kids, throw a party at their new schools. Keep it simple and fun with maybe some cookies or cupcakes to break the ice. Their teachers can really help in this area. Great success with your move I hope this helps.