OK, I just moved into my new house last week so here's what I did:

The "cat room" was moved last...I just kept the door shut while we were moving everything out. When it was time to take them over I put Vegas and Reno in their carrier and packed up dishes, toys, cat tree etc. And moved them and their stuff at the same time directly into their new cat room in the new house. I set up food and water dishes, their cat tree etc. And I left the same kitty blankets in their beds so the smell would be the same. Then I let them out. I let them roam the house cause we didn't have movers coming in and out, everything else was already there.
They LOVED it; but I expected them to adjust easy cause they are still young (4 months). I would suggest keeping your kitties confined to one room for a few days so they don't get spooked. Especially if you will have people coming in and out moving stuff....we wouldn't want them spooking right out the door

I think what somone suggested earlier about not washing bedding etc. right away is a great idea. Once you give them a couple days to settle in one room, when they come out and recognize similar scents, it should make the transition easier.

Congrats on your new house!! And good luck with your move!
I keep planning to take pics of my new house..you should too...I think we are due for some "new house tours"!!!