I don't understand how it will maintain proper temperature without a thermostat. They are only $8 at the hardware store, and if you are worried about wiring, don't be--all you do is cut one of the two wires from the cord, and add the thermostat. There are lots of YouTube videos showing how to do it. It took me five minutes to setup both my light and fan on a thermostat.
To control humidity in mine I drilled a hole for a straw. I use a syringe to shoot water into a tray through the straw, so I don't have to open the lid. When it comes to lockdown I'll probably use a sponge.