Just one single clear and close up picture taken in normal light would make answering this question so much easier!
Hint, hint to any others who ask this question in future!
I would personally be happy to harvest these plants now, judging from what I can (barely) see. If you prefer a more heavy and sleepy body type stone, rather than a mind bending and psychoactive high, waiting another 7-10 days would be about right. From this point onwards, the plants THC is now starting to break down into CBD and CBN, which causes the heavy couchlock and sleepy effect. If you want pot with maximum THC and high psycho-activity, harvesting when there are still about 5% whitish pistils left, will give you that type of effect.
You could always harvest one plant or a flower or two and leave some other flowers longer and determine for yourself what YOUR preferred level of maturity is.
For a comprehensive explanation about harvest maturity, scroll down a few questions to "Car1bGrow" - "what are the signs for harvesting?". I posted a extreme explanation to that question and that answer will apply equally to your/this question.
Also, you are dicing with death with your humidifier going like that this late during flowering, the risk of mould would be great.
Hope this helps,......
Organoman.