Don’t fight to make the temps humidity perfect just make it match the environment you are in too hard. Find an equilibrium for your temperature and humidity. Using a dehumidifier to control the humidity in the grow room allows you tons more latitude and makes it all simpler.
Buy a T3 humidifier and use your 69 controller to control it inside the tent
I run a small ceramic heater when needed on low which is only 500 watts which I also control using a smart plug
I run 3 fans and there are only 4 UIS plugs to control so I added a UIS switch which controls all 3 of my tent fans off one port