I would say to make sure there is only ONE in a vertical 10 gallon tank. You have to make sure there is enough ventilation, as in the photo in the previous post. They are big, active frogs and need their space. The females tend to get overweight if they can't do much moving around. Some frogs do not handle the small space well and will have issues such as nose rubs. I, personally, would never go less than a 20g, even for just one frog. Transporting depends on the frog. I have one grey that would probably handle it very well. She's chill and not easily disturbed. The other two would be highly stressed. You would have to learn the symptoms of stress to know whether or not your frog is handling things well.

Any hardwoods would be okay. Just look up your tree and see what it is classified as. I bake them in the oven at 250 Degrees F for a half hour to make sure any pests or bacteria are killed.