How deep are you planning to make the water section? Remember Royce Pacman frogs are not good swimmers and water level can be no deeper than up to the frogs chin no deeper. Also you'll have to find a way to make ease of access from land to water and water to land. Nothing slick or the frog will have trouble getting out of the water. Also don't want anything for your Pac to get trapped under in the water.

It looks good, but it looks like once all substrate is in that youu be almost at the top of the tank correct me if I'm wrong. I'm trying to picture how its going to look