Welcome to the wonderful world of snake keeping! You have quite the cute little one as well, reminds me a lot of Paarthurnax!
Two things I would add, which have already been said, is a thermostat (Not optional!) and switching out the aspen. I dont want to beat a dead horse here but, they both should be done. Snake burns are a terrible thing, and something no owner should ever risk. Personally my snake is in a tub setup with paper towels as his substrate, but ive heard any coconut fiber bedding like Reptiprime are usually really good for helping with humidity in the tank! I would say raise the humidity to 60, 70 for when the little one is in shed. Hope you enjoy your time with your new snake!