Moving tanks is never fun. Here's what I did. I had an empty tank of equal size sitting around (long story) so I moved that to my new place and set it near where I wanted my tank. Then I transferred about half the water along with the rocks, fish, corals, and inverts in five gallon buckets. Rocks embedded in the sand were left in place. I put all that in the temporary tank and drained the original down to the sand level, then covered everything with Saran Wrap. I then brought the tank and stand, placed them into their final location, and began to transfer the tank water plus newly mixed water. Leaving the Saran Wrap in place allows pouring in water without disturbing the sand. When at least half full, I started replacing rocks and whatnot.
I recommend having an extra heater, as my water dropped almost 12 degrees in the hours this process took. This is not a fun process. It is a lot of hard work. Have as many buckets as possible and extra sets of hands capable of carrying them.