I need a game plan for a tank swap

[ScubaSteve]

I've just finished building my new tank and am wanting to swap it with the current tank on the stand.

How the heck can I do this easily? (or at least with minimal issues)

The current tank is only a 40 gallon cube, so I've been debating draining the tank quickly (leaving the rock and coral in there) and lifting it off the stand and onto the floor, then filling with water again. I don't have any fish right now but it's packed to the nuts with coral. I don't want to rip the rockwork and corals down until the new tank is ready if possible.

Any thoughts on this?