K.-
We have moved several times...the first when the kids were 2 & almost 4. The transition time was the hardest (probably because the kids were reading how stressed I was!). Once we got to the house, we took the kids first thing to their rooms. We put things into them that were ONLY theirs...toys, a picture to hang on the wall, a special animal, etc. Then, when the beds arrived, we set those up first, so they knew where their rooms were. Then, as the boxes and things started coming into the new place, we'd go through them as needed.
Even though moving entails tons of details, the things the kids cared most about were 1) where is my room and 2) will we all be together still. We decided that "home is where you hang your stuff" and even when we moved overseas, the kids were ok because they knew their stuff was coming and we would be together.
Moving is hard and is a ton of work. Good luck to you to keep the family "sane" in this process!