"Showing my new-bee-ness, what should the moisture content be? I didn't know it needed to be at a certain level. And, what does that do to/for the honey?"
DuaneB, the moisture content should below 18.6%, anything above that and there is a good chance the honey will ferment. A lower moisture content in honey can also keep it from crystallizing sugars out of solution.
It's been 24 hours and I just checked the honey, so far I'm only removing 1/2 % per day even with the larger fan, I expected faster drying and will extract tomorrow instead of today.
looks like the basic idea is good, maybe a square box made out of plywood with just the dehumifier, supers and fan would be more efficient.