You can always do a mix. Use a dryer substrate like retibark and mix it with the cypress mulch.
I use cypress for my boa and it will dry, pretty quickly too. It usually only stays on the higher end for a day or two and it will start to dry up. Ball pythons are fine to have a few days of higher humidity, it wont hurt your snake. You will find yourself spraying the cypress in about a week or two.