I use coconut substrate and I've never had trouble. If you are feeding f/t and are worried about a hatchling getting something stuck in its mouth, you can always put down a paper towel in the enclosure and lure the snake onto it to eat.
I am sure many people on here will tell you not to worry at all.
PS. It is good of you to be getting ready like this. Lots of research and preparation is very important to assure a happy herp! Welcome to the forums.