Relative Humidty level in Misting tent

Anyone have any guidance on the humidity level one should maintain in a humidity tent when trying to propagate Fuzzy Kiwi Cuttings?
I am able to maintain constant heat on the bottom (heat mat) and a high humidity 89% to 95%.  Is this humidity level too high? I could keep an eye out for mold or other growing on the stems and spray with h2o2.