Hey,
10-gallons is fine for juveniles but even one adult requires a 20-gallon tank, then for two at least a 30 gallon or 18x18x24" Exo Terra, ideally larger. Provide plenty of cork bark and artificial plants as well in it. Heat mats are not the best. Heat should be provided by a incandescent light as they like to bask. Handle when they're older and rinse your hands and dry, then spray some dechlorinated water on them. Superworms, in moderation, can be used and so can roaches. Put them in a deep bowl, otherwise they will burrow and hide from the frog. You can give them mice once a month or less.
Some good books on them you should give a read: Amphibians in Captivity Staniszewski 1995, Popular Tree Frogs De Vosjoli and Mailloux 2005 and Treefrogs Devin Edmonds 2007