10. That should be okay. I use lights for heat mostly.
12. The emloyees arnt truthful.
18. Meal worms and superworms are a nogo. If worst comes to worst you can use waxworms as a treat, but beware... I used wax worms to spark my baby's appetite and it constipated her. Now I'm dealing with that.
21. Substrate can be changed every three weeks to every month.

Day time temps should be 82-84 degrees, and for night 77-78 degrees.They need a 12 on 12 off for day and night cycles. Make sure you cover three sides of your frogs enclosure to reduce stress. Here is what I use for my new baby.