To be perfectly honest you do not want a humidifier it’s kind of a waste of electricity
If anything add a humidifier by the looks of your grow it wouldn’t take a big one set it for about 60% in veg and turn it down as your flowers get bigger, like 40 if it will go that low. The more bud in your room = more moisture. A dehumidifier can be your biggest friend and if you don’t have the right size of dehumidifier, your worst enemy. I’ve had a lot of big buds wasted due to mold because of humidity control issues.