What a lovely enclosure.
I see so many boring empty fishtanks, it's nice to see something more naturalistic and pretty.
A lot of people really like coconut husk. I tried it recently in one of my racks and though my paler morphs look quite attractive on it, I was less thrilled when it came time to spot clean after a feed...trying to spot dark poop on dark bedding was rather slow by comparison. Needless to say it will be changed on the next bedding shipment.
For one snake, I think you'll be fine. If there's anything I've learned, it's that you can usually expect to find the poop attached to the most difficult to clean decoration in the tank.