IMO
Expecting to break down travel and set up with animals living in the same tank the same day is not only not practical it's a recipe for a disastrous end, for either the floors in the new house or the animals or both.
I would set my goal a bit lower to include only breakdown and transport to a temporary holding system (rubber maid tank or the like). Then once the pressure is off you can start re plumbing and filling the new system.
In addition to all the great suggestions mentioned, add a supply of amquel+ to your list as well as a bacteria product such as Fritz turbo start 900.
Be particularly aware and cautious of the sand bed, you will almost certainly disturb it, consider discarding it altogether, especially if the plan is to get animals in there same day (this is where the turbo 900 and amquel with be important).
If you have an ro/di system make sure to have extra carbon and di cartridge, In a pinch bypass the RO membrane and you will make water about 10X faster. (if your not sure of the water toss a cap full of the amquel in)