Sounds fine. Bit of advice. Order online to save a ton of money. Especially on dubias. My local pet stores uncharged a tone. Discountdubias.com has them cheap
Try to keep everything dry. Don't let the egg crate get wet. Remove uneaten food. Clean out frass. Even doing all the above, you need good ventilation and heat to keep it from getting too damp.
If you want a long-lived feeder, you should check into dubia roaches. I started off with crickets...
Most live feeders are going to hide as best they can. I hate crickets because for a lot of reasons, among which is that they climb to places my lizards can't get them. I love dubia roaches because they are terrible climbers and have so many other advantages. I get mine at http://discountdubias.com/