Could I keep Mertens water monitors with turtles and water dragons

[ben swift]

Hey reptile community, I wanted to ask you guys some quick questions about if it would be suitable if I could put 2 Mertens water monitors 2 long neck turtles and a colony of water dragons. I would have a 3m x 2m aviary with half of the space being a pond. I don’t have the animals yet, but I was researching about it and I thought it would be a great idea. thanks everyone