I recently moved and my advice to you is to have a friend who can help, have lots of containers that can hold water and be as quick as possible.
I pretty much filled up some containers half way with water, then pulled the rocks out and submerged them and closed the container to stop spillage.
I put the fish, crabs, snails and corals each in their own bag and then put them into a black bucket and then covered it up to make it dark (less stress on the fish).
I then drained the remaining water out the aquarium and then removed the sand bed (only because the tank is too heavy with the sand in it) into its own set of bags. The bags were just the ones you get from the LFS
which they push fish into when you buy.
Transported as quick as possible and upon arrival took the opportunity to clean up the algae in normally hard to reach spots (tip: use a handful of sand to clear away the algae.. works a treat).
I put the sand in and then the rock and filled it up as I went to "lighten" the weight and see how it sits as water is added.
I put the heater, filter and power heads in and ran them. I checked the water temp of the tank and the bags in which the fish are in, and the levels of both and they were fine so the fish went back in. Did the same with the corals and other inverts.
Aftar about an hour or two the water cleared up and it was all looking sweet. Only lost one fish which was already on the out due to being a weakling and wouldn't challenge fish for food.
I had a friend who's also a marine aquarium hobbiest who helped me and we had about a 20km distance to travel. The whole process took around five hours, so be prepared for the time alone it takes.