I think the plants are fine but can pretty much guarantee that the water bowl has sides that are to tall to climb in or out of. I would replace it with a better option. Maybe the Fluckers Jucuzzi. It is designed to be level with the substrate and has steps to get in and out. I still wouldn't fill it up and instead just put enough water for the frog to wade in.
I think your substrate looks about right. I keep mine damp.
If that's the ExoTerra dish I think it is, there's a ramp at one end. I'm not much of a frog guy though, so I don't know if that matters.