I thought I'd post a picture of the tray of them. They are sitting on shelves outside, next to the shed, and mostly protected from rain unless it blows hard. This also inspired me to clean up and organize my potting area.
Not the most exciting picture, but if I did anything wrong I can still fix it!
I don't have a mister; the soil was moist out of the bag and once the surface (semps already there) had dried (it's kind of low humidity right now) I sprinkled with my fingers! Not real even but definitely not too much.
I also do not have chicken grit. I mixed some pea gravel in with the potting mix; it has sand mixed with it but the gravel pieces are a little large. Like quarter of an inch, some of them. I may put a teeny bit between the rosettes if I can manage it.
There are drainage holes in that tray. And coffee filters to keep the mix from running out.