why would you want to raise the humidity any way ? when you bud them that is BAD...then what are you gonna do about the temps? Is an air intake comming from a main room ? An A/C in the room with a humidafire would be ok , then you can turn it off for flowering and the A/C will keep it cooler, the humidity only has to be around 40-60 . 40 or lower for flowering though or you will get mold...I did same as you but I bought a misting system first grow...saved a couple buds off 1 plant out of 6 ...what a waste ...MOLD city and it can happen quick to...do what you would like but i did that and messed up a lot of smoke I had mine at 75 for vegg and like 60 for flower and i fucked up ,, the plants was 4 foot tall and leaning from the HUGE buds that i fucked up....I cried...ALOT...lol KEEP IT AS DRY AS POSSIBLE WHEN FLOWERING....ask Zandor..lol

P.S. the dryer it is when flowering the more resin build up on the buds to keep them moist so they dont dry out .....trick the plant...play GOD