Hello Dougspcs, what a beautiful idea brilliant and realization clean, I advise you put a bit of water at the bottom to increase the humidity through ventilation,
you gave me a nice idea, there are minis digital thermostat (W1209) controlled a fan 12v and even a lamp in 220v max 5 amperes to manage the temperature in the box,
it would be really good to be able to control digital with mini thermostat,
it costs 2 or 3 dollars and works very well, thanks for sharing, a cheese for this work and for having thought of us!
Good continuation.