Paper towels are perfect in my opinion. I use only those and newspapers. The main reason being that I used to use aspen and when you have a lot of snakes in your collection, the aspen filled cages are usually only spot cleaned, picking up only the poop you see, leaving dried uric acid on the bottom of the cage that may not get picked up. That is how I did it, thinking they were clean. lol...with the paper towels, I lift out all of it and wipe down the cage well and with that, leaving no waste anywhere.
BUT aspen shavings are good as well. They give the cage maybe a more " natural " look, unlike my cages with their " clinical" look with the paper towels. If this is going to be your only snake for the time being and you have a few minutes a week to dump out the aspen, wash the cage good, and put new aspen in, then I would suggest that. The snakes really like to burrow around in it.
Just some options there. Keep us posted about what you get and let us know what you got!
Take care!
Billy
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Genesis 1:1