How long you going for? The humidity rule if followed will give you 7 days mold free if you can produce a room that's 70f 70rh % 7 days. Start your flush asap, and remember to pull your plant after its had at least 12 hours of dark. 24 if possible. All the sugars and starches recede to the roots at night. Good luck.
all the sugars recede into the roots?
This is news to me.
Nevermind, what i'd do, if you really want to harvest them, is simply leave them unwatered, and let them start their cure with the roots still attached, just turn the light off, and let them start to dry.
One of the best accidental cures I ever did was when I got pissed at a mite infested plant, and stopped watering it, and after it dried out in the container for about 25 days, under a redwood tree, I was bored and plucked a nug off, and it tasted damn good, better than my normal cure in fact.
Not recommending that for an entire harvest, but for your circumstances...
seven days with the roots attached would be the best bet, in my opinion. Just keep it cool, lots of airflow, and obviously the lights off.