I'm glad you got a better outcome. I hope the little guys thrive for you.
You're going to have to be vigilant about mites. They are tenacious and known to wander and hide in furnishings.
White paper towel, white dishes, disposable cage furniture, all good stuff.
I've also heard of people who create a mite barrier of petroleum jelly near the top of the tank to trap the juveniles when they are in their wandering phase.