Finally got up a proper dehumidifier. We were using a portable air conditioner with a dehumidifier mode on it, but it wasn't doing a great job and was soaking up a ton of electricity. We were between 60-70%RH. The new dehumidifier can finally drop the humidity below 50%, it floats between 35-50%RH now in the room and between 50-60% in the tent.
We still have an issue with airflow in the room but we are working on coming up with a plan to fix that including a dual hose AC so we can stop the single hose AC from drawing in so much air.