Now that we got the humidity back to normal, I treated each plant to fresh nutrients. The pistils on Chonga are starting to turn brown, indicating it'll be time to harvest soon (despite my 20 Dec prediction). Cheecha's pistils are still long and bright, so we still may be on track for her harvest in December. I'm going to start flushing Chonga this week while maintaining nutrients for Cheecha.
UPDATE: I finally caved and bought a Grow Tent! almost immediately the temp rose from 73 to 77 degrees. Humidity is stable at 34%. I'm going to wait until Chonga is harvested before introducing the humidifier again to dehydrate chonga a little prior to harvest.