When I've moved my tanks, I've put the water into garbage bags (stops the water from sloshing out of the can)and inside trash cans. The rock went into separate tubs and covered with damp tea towells to keep from drying out and the animals went into plastic bags and placed in a styrofoam cooler.
The only thing of real concern is if there is sand, if it has a deep sand bed you may want to replace it with new stuff. If the sand isn't very deep you could leave it in the tank and transport as is, providing it doesn't make the tank too heavy
