Well, they're all done and bottled up. I swished my drink around in the last jar after I was done bottling, and now I'm feeling pretty good and just invented a sandwich, so I am calling this technique a success.
For reference, the temp was able to get up to 175F with the crockpot on high and a towel draped over the top, leaving the jar tops exposed. Everclear's supposed to boil at 173 but I saw no signs of boiling activity.