I just bought a humidifier that will humidify 2900 square foot. It has auto on/off depending on desired humidity and room humidity. It also tells me when bottles are empty. 3 fan settings. Should take care of humidity.
Right now room is at 65% humidity.
I will watch the plants leaves, soil, roots, humidity and light meter has still not arrived. Once I get the conditions right, I can rest and let them do their thing.