What I say about portable storage
Resist it! The things you used at the end of your stay in the old house will be the first things you need when you are moving into the new house. Instead of forcing yourself to dig through half a dozen moving boxes to find the things you need, pack all your moving essentials into their own boxes. Write "Moving Kit" or "Open First" on the boxes. When you unload the car or van, put the moving kit boxes off to the side where you can reach them easily, and watch to make sure they are not hidden under a deluge of other boxes. The first several days at your new home will be easier when you have your moving survival kit ready to use right away.