I'm going to go with no, unless you have a separate, ready-to-be-used enclosure currently available. Even though the enclosure does seem large enough, I'd be concerned with the risk of bullying and competition for food. If you're looking for another animal to keep in a vivarium with one of the species you mentioned, I'd do dart frogs, or set the tank up as a paludarium and keep newts or fire belly toads.