I would have at least two set up already...sometimes the baies all get along great, but other times some are aggressive or dominate over the others, causing stress, and wieght loss. They also will prevent the others from eating. If they have been living together fine, then i wouldn't worry about a dominate one, but if they have been seperate i would have at least two ready.
Good luck!!
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Lauren 
1.1 Saharan Uromastyx (Rico-orange male, ????-yellow female)
1.1 Jungle Albino Leopard Gecko (????-male, ????-female)
Cozmo-Hannovarian/Trakehner Gelding
Chip-Dutch Warmblood Gelding
Ck-Hannovarian Gelding
Cruiser-Irish Sporthorse Gelding
Morgan-Labrador Retriever
Opal-Persian Cat
Dude-Jack Russel Terrier
Sky-Blue Male Betta
From: New Jersey