Yes air circulation and humidity can be maintained together with a few tricks. vents are one way but it doesnt get the air moving. Computer fans do well but you will need to build a unit to hold it and set mount it in the lid of the viv.
Its not just oak leaf that doesnt do well. Many Bromeliads and other phlos, hoyas, dishidia and orchids need moving air to thrive as moisture on the leafs are a death sentence.

I will set you up with a few links on this if I can dig them up. Otherwise I will include a detailed build of it in the thread Im working on for a monster viv build.

Michael