Looks about as good as it can be to me. You are dealing with animals who make random actions, I look forward to seeing how these evolve. I made something similar out of a juice bottle and duct tape.
I had mine in a 5 gal bucket inside the cage fir the first few days. I set up two feeding stations (one for crickets and roaches and the other for worms) that he figured out quick.
Anyhow, here is what I did.