Don't be too concerned about the high humidity with young bloods in this setup. Remember what there natural environment is like, with humidity averaging in the 70 and 80% range consistently. High humidity in captivity with true tropical pythons is usually only a big problem when cage interiors are not clean of waste material. This is what causes the overgrowth of bacteria and fungi. I use maternal incubation with several tropical python species and these females incubate in moist spagnum lined nest boxes with an ambient humidity that never drops below 90% for 2 months. I have never had a health issue with any of them in the 30 years I have been doing this. Just makes sure you keep the cages clean and change out the spagnum frequently while using this setup. Hopefully it's only for the short term.

Kelly