are you planning on aquatic life in the paludarium, or something more terrestrial/arboreal? the reason i ask is that if you were planning on a reptile or amphibian or even an insect of some sort, they all have different requirements and it is best to research the species you want to keep and build to suit. it's mich better for the animal, and yourself in the long run.
good luck with the build, that is such a great dimension tank to start with!!