Omg awesome! I was planning a similar setup for a 48" long 60gal. Now I'll need to find a new house with a bay window too I guess, nice setup! What are you humidity levels lower in the tank with an open top? Is there any airflow around the tank?
I had DAF in an uncovered 10gallon with water 1"from the top. They can climb out of that tank np, but they probably won't really leave the water. Fire belly toads on the other hand, always escaped my terrarium when I was a kid.