Welcome to the board and congratulations on the new tank!
Plan on setting aside an entire weekend for the move. My best advice is to visualize the move over and over beforehand to try to predict what problems may arise.
Before you leave to pick up the tank, make sure that the space where the tank will go is ready and that you have enough electrical service for the tank. Also, have enough saltwater premixed and aged for at least 24 hours, so you won't have to mix an emergency batch in case it's needed later on (some water might get spilled during the move, you'll probably loose some water due to sloshing on the way back, you also might not have enough room to bring back all the water you anticipated, etc...). It would be ideal to mix this water to the same parameters as the water from the tank you are purchasing.
As far as the move goes, purchase seperate Rubbermaid containers to house the live rock, sand, corals, and fish, along with two or so trashcans to haul the water in. When you pick up the tank, disassemble and load all of the equipment first, so the livestock is the last thing taken out of the tank. Load the livestock into seperate Rubbermaids, along with enough water to keep it submerged. Put the tank into your vehicle last, so that it's the first thing you unload when you get home.
When you get home, set the tank on the stand right away. Then put some water, the sand, and LR into the tank, followed by the rest of the livestock. Be sure to add enough water so that the livestock stays submerged. Place the heater and any powerheads or circulation devices in the tank at this point to keep the water warm and oxygenated and to keep the inhabitants alive.
Now you will have time to set up the rest of the equipment, and from the looks of the auction, you'll be spending the better part of a day setting up the Ca reactor, the sump, skimmer, etc.
Between now and then, just keep reading and ask away if you have any questions come up.
