Your temps and humdity seem a bit off. Cool side should be 80, and warm side 92.
They say for young snakes, the snake will do better a bit cooler on the warm side,say 88 to 90 degrees. Do you have a dimmer or temperature regulater for your UTH?
Humidity seems too high. Humidity should be 50%-55% normally, and 60% during shed. Hope this helps. Good luck with your new snake!!