hmm, looks like you got complicated humidity.
this is my very simple bator, have 6 ventilation, even the "door" always opens 4 hours per day.
and the humidity is quite good at range 45-50% even with whole vents and door opened. just place it in a place that there will be no one crossed it except you to turn eggs and checking only. no wind, no sunlight, and will be fine.
this is my very simple bator, have 6 ventilation, even the "door" always opens 4 hours per day.


