Possibly. I never felt icky/sticky in Tuscon and Yakima. And an indirect system will increase humidity *zero* percent (though a lot more complicated. I have a lot of crawlspace room. Enough to make a grow room, but a bear to get under the house)

I *might* be able to control the humidity.

BTW whats happy humidity levels? and whats the kill zone levels (ok not kill, but fungi I'm not growing 'shrooms)