We have a rather large worm farm built from a wheelie bin (hope you know what I mean). Anyhow my worm farm tip would be to leave a bucket under the farm & always leave the tap on or it gets too humid for the worms & they die or escape. That has been my experience in Australia anyway. The good thing about yours is that you could move it fairly easily as the worms can cook in direct sunlight on hot days & like a bit of sun during winter. Good luck with your new friends.
Love Charlies hat!