If you are going to use a security system, or already have one installed in the house then set it up the day of the move.
While this may seem like just another thing that’s added to your plate, make copies of all of the keys prior to you move. In all of the chaos of the move it would be easy to lose a key, and that is the last thing you want to deal with on your moving day.
Research what internet providers are in your new state before you move. It will help to know what service you want in your new place before you move.