A little "trick" for new babies is to put the water bowl in a corner, or at least on the perimeter. You can even push the shavings up to it (if you decide to use aspen or cypress), making a "ramp" to the water. I have had hatchlings dehydrate even in a small cage because they didn't figure out where the water was right away (because my water bowls were in the middle of the cage). Snakes, especially babies, tend to cruise the perimeter of a cage and often don't spend a lot of time in the middle. So I dunk new babies in the water bowl briefly. Once they are used to the cage layout and well hydrated, they will probably find the water bowl no matter where it is.
Also, a long skinny hide (such as a PVC pipe or tunnel made from a paper towel core) can span both the cool and warm side. Cutting an opening in the top, in the middle of the tunnel, can allow the baby to find its preferred temp along the warm / cool gradient without exposing itself to all of the scary "monster" in the outside world. Whatever hide(s) you use, make sure they are just big enough for the baby to fit inside and that he can feel the walls closing in on him. That makes him feel secure. You can make a hide smaller inside by cramming shavings or paper towels in it so he barely fits, Then you can remove shavings or towels as he grows. If you use a tunnel, pile shavings around the open ends so that it is dark inside. Just leave a small opening on the top.
Remember that baby snakes tend to be very timid, secretive, and / or aggressive. Those that weren't tended to get eaten by predators many generations ago and didn't spread their genes. So don't be surprised if it isn't as calm as most adults are.