Quite the collection there! Hehe Monty Python.... Anyway, crested geckos are not horribly difficult animals, and by the sound of it you know a bit of whats going on. Just be sure he's in a tall, not wide, tank. Don't feed him crickets too often, he needs to focus on his delicious fruity soup. And have you ever pondered starting a roach colony? With all your animals, crickets start to stack up (moneywise I mean). Some people breed roaches (SUPER easy, less smelly, lower matinence, and better nutrition) to save on cash and to have more resource for feeding. Just and idea particularily with the dragons. I had one one, he ate like a monster!