The warm hide is fine. Cool hide is fine too as long as the snake has access to heat which it does. How are you reading the temps? Dial and temp strips are notorious for being off by a lot sometimes. For humidity, i'm gonna guess you are using a glass tank? If so cover up 3/4 of the tank or more and see if that helps with humidity. I would avoid putting anything wet on the screen top though as that will cause the screen to rust. I sometimes put a wet paper towel on top of the warm hide for my gal when I need more humidity and just moisten it in the mornings and evenings and it keeps her cage around 60-70% if I do it both times.
Also by covering the top 3/4 or more of the cage, your ambient temps will go up a few degrees which would hit that nice low to mid 80s.
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