Would pretty much any tree frog be good with fish or should i stay away from some of them?
Did you remove the hydroballs? Don't think it's a good idea to remove that. Well, either way the idea is to prevent like deadspots and stagnant water in the vivarium. Usually, the hydroball area is blotted out with some sort of paint, acrylic glue. Something like that.
Firebellied toads are really toxic, so in a vivarium with limited amounts of water I really wouldn't quite suggest them.

I would have done flying geckos but a Long Tail Lizard, Green Anole, House Gecko, and Green tree frog community would be pretty cool.