Ok continuing.
I would not put these little guys in a planted terarium for a few months. keep it very simple. Moist paper towel bottom, a small pond perhaps, and stick a pothos vine or something in there. (still in a pot)

UVB lighting is very harmful to many frog species, go for natural spectrum lighting - Greys are native to the states, so unless your house is an icebox, you don't need a heater/heat light. Again, go simple. this species does not need a complex setup.

Really go for moisture. Get those little baby frogs moist - if the humidity is low in your house, get a humidifier for that room to help the overall moisture in the air. then mist, mist mist

good luck!