Hey my friend ;-) When I had temperature and humidity problems early on I was already desperate, but there is always help 🤗👍. First I would get a ventilator that has extremely large deminsions, then adjust it to your perfect temperature with a step transformer, and you have your perfect values. Assuming your exhaust air goes 100% outside, and not back in the same room :-) hope I could help you, good luck growing and have fun bro