I'd suggest simply taking them where you want them to go. You can purchase a screen cover for transporting hives. And once you get to your land, move the existing frames within the old hive into your new hive bodies. Do you know the size of the existing hive body frames? That might dictate what you are going to purchase for a new hive. Then again, are these old boxes truly useless? Can you keep using them?

Have you inspected for foul brood or other diseases? You'll want to examine that hive BEFORE you take it anywhere. No point in moving a contaminated hive and risking your other equipment.