Ivywoods,It sounds like your farm is up and running. I'm pretty new at this, too, but everything you have said sounds right on. 80 degrees sounds pretty good. I'm wondering how you manage to keep it that warm. My house is not that warm. The amount of time varies, but with those conditions, depending on the age of the worms when you got them, you should see them pupate and then turn into beetles. A 5 stack tower should be more than adequate. I have 2000 worms in a rubbermade tub right now. I think it all just depends on how much time you want to spend separating them and how many you need to raise for your chickens.
Its easy to get the temps up with a bathroom overhead 250 watt heater red lamp. I bought one of the socket with the silver fly saucer cover with a clip on base and pointed it directly at the 10 gallon fish tank and wamo 89 degrees. I would use a cover over the top of the tank so the heat doesnt get out