I have a small reptile business, but I specialize in amphibians. I usually have a wide variety of frogs and have kept most of teh species that you have listed. If you want to keep a variety of animals the most important thing is to keep it simple. It sounds like you are pretty much doing this. I use a standard frog set-up with some variations depending on the type of frog.
Here is my basic frog set-up:
-Bedding: Eco Earth (cheaper)/Bed-a-Beast
-Use Gravel under the bedding for drainage if it is a permanent set-up or newspaper for messy frogs that require frrequent cleaning
-I use a small plastic water dish in every cage to help keep the humidity up. Most frogs like to hop in and out of it, so change the water daily.
-I use spagnum moss near the water dish to provide a place to hide and to keep the humidity up.
-Live potted plants are used in every cage, they can be cleaned easily and provide cover for the frogs. Pothos works the best.
-Driftwood pieces are used for cover and decoration.
-Screen Lids with locking clips are very important.
-I do not use heat sources, but my room stays pretty warm.
I have different frogs in different part of the room depending on the temperature preferences. Humidity is supplied by spraying them 2-4 times a day depending on the frogs' preferences.
It is important to know individual frog preferences and try to adhere to these. Also consider where the frogs come from when designing the cage. tree frog need more branches while, horrned frogs need a deeeper substrate to burrow in. Obviously all of this is just an introduction.
The horned frogs are very difficult captives, so don't feel too bad. I lost 4 Solomon Island Eyelash frogs while I was away fro Christmas. Like the previous poster said most of the frogs you are keeping are imports, so they will be a little more difficult. Imported frogs are not impossible to keep though, just use strict quarentine procedures and monitor them closely for the first several weeks.
I hope this long, wordy post helps you out. email with any more questions.
-Heather
Bluegrass Exotics
bluegrassexotics@wmconnect.com