Should we assume you are using the same tank on the new stand?
Is the new stand going in the same place as the old one?
1- don't try and move the tank with anything in it. You will be tempting fate on breaking the tank.
2- get lots of totes and things to hold the tank water..put your rocks in one (keep them submerged so there is no die off), your fish in another, and your corals in however many it takes.
3- have an air pump for the container that your fish will be in and COVER THAT VESSEL!! A heater will also be needed (air temperature is not the same as water temp!) for the fish and vessels with the coral in them. The coral should also have a circulation pump.
4- If your sand-bed is a year or more old - replace it. Keep a cup of your old sand to seed it.
5-The switch-over WILL take you twice as long as you think it will.
6- have
glue on hand for putting the frags back in the tank
7- have at least half the volume of new tank (and sump) water on hand to refill the tank (the water itself contains little bacteria), may as well use mostly new stuff to refill the tank.
8- check all of your plumbing connections for leaks before you start adding stuff back into the tank.
9- put your rock back in first and then the sand. Pouring the water onto a clean dinner-plate or a plastic bag will aid in not creating a sand storm when you refill
I'm sure I'm forgetting a bunch of things, but I'm sure others will chime in
