Hmm, 75% humidity could cause you problems with it drying slow. If you have very dense or thick buds, that is borderline of being too humid, especially at 70*. You really need to get to about 55% and 65*. If you can contain it within an enclosed space like a cardboard box and hook up a small
fan that will pull air out of the box at a good rate and allow air in at the opposite side, without blowing air directly on the buds, you should be ok as this will pull the moisture away from the buds.