If the tank is holding everything on your sig list, remove the fish and water to move the tank. I figure you're talking about at least a 125gal to hold all those fish. Aside from the couple hundred pounds of tank weight, you're also going to have to contend with 100 or so pounds of gravel. If you leave just a couple of inches of water in the tank, that's another 120 pounds of weight. Placing that much side-drag on a stand may cause the stand to flex and break. Don't take risks by short-cutting. Break the system down to a series of manageable weights and then move everything to the new spot.