So I understand with LEDs you can get a higher temp thus getting a higher humidity and getting a better VPD,is 85 with 70% too high temp and humidity? They look like they are thriving.
If the amount of water vapor in the air stays the same high temperatures cause the relative humidity to drop. Lowering the temperature will raise the relative humidity. Keep in mind that in both cases there may be the same amount of water vapor in the air. The only difference is how much water vapor the air "CAN" hold.
LEDs tend to be cooler so I don’t know what you’re on about LEDs making higher temps.
Higher temps doesn’t mean higher humity.
A look at your hygrometer in the picture though shows to me that you’re in the proper window. So you’re doing well. Your understanding of LEDs temps and VPD not so much.
Higher temps without supplementing extra CO2 to the environment is no good.
Your plants do look good.