Spawned the rest of the grain yesterday!
Also, the PE bags were done enough that I put a 1/2" compressed layer of coir on them as a casing:
(I took the pic before putting on the casing layer)
and here are the bags in the closet. I've got a fan running quite a few times a day in short bursts and a light bar that I turn on and off manually. Other than that, I'll open the bags often to spray down the inside walls and get some extra fresh air going.
Now I just need to sit back and enjoy the fireworks! Oh, except for casing the Mexicana bags... I need to do some research into that.