Ok, you want to aim for 78-80 cool and 88-89 warm. Remember, the heat mat is there solely to provide a hot spot, not for ambient temps. Your CHE is there for ambients. So you'll want to use a temp gun to check the actual surface temp above your heat mat. This should read 88-89. From there you may have to play with the location and temp setting of the CHE to get the gradient.
The humidity is fine for now, since she's in shed. But after the shed you'll want to be in the 60% range. Mine stays in the 50s-60s unless in shed.