Hi there, Sorry to hear about your probs.
I had an aquaone 980 that began leaking on Friday night last week. I managed to borrow a basic four foot from a local pet shop which was very lucky.
Everything from my display tank was systematically moved, filter, substrate, majority of water, plants, drift wood and the fish.
Technically nothing has changed as they have everything from their original tank with them, I have upped the water changes and slowed the feeding, just to be sure though. I have Blue Rams who are known for being fussy about water conditions and they are fine and my kribs have spawned in their temp home (typical).
Just try to get the cycled substrate and the filter going in the new/hired tank and you shouldn't have to worry about ammonia.
Good Luck with it all and keep us posted.
p.s my plants weren't particularly happy about the move but most of the established plants are fine just the younger weaker ones have suffered.