Bring 'em by.
I've estimated it to be a little over 400. I have an aquarium installer coordinating the tank build and move. They looked a little scared when I showed them the plans.
Fortunately, the entire back wall of the house and the interior walls that would be in the way will be demolished, so the move should be fairly easy.
But, I still worry about tangs like unicorns, whose max length is supposed to be 2'. The width wouldn't seem to be enough for them, at least. I want to plan for the animals' whole lifespan, even if it's pretty rare for a fish to attain max length in captivity.