Humidity is good.
I would adjust your temps though.
85F is low for a hot spot. Ambient should be 80-84F. Hot spot should be 88-90F, but not over 90F. 85F will make it tough for the snake to digest properly.
Also, cool side is pushing it on the low end temps. I would aim for 78F-80F for the cool spot. 78F is fine, but you leave little margin for error. 75F is probably too cold.
Currently your snake can not get warm enough and has to choose between not warm enough or too cold. I'd fix that quick.