Awesome experiment, I look forward to future updates!
I do have a slightly on topic question for you though.
I have experimented a bit with growing mushrooms from pots of soil both indoors and outdoors with mixed results and rather than contamination I think that most of my failures have been because of fungal gnats eating the mycelium, do you have any suggestions on what I can do to keep them out or get rid of them without damaging the mycelium? So far I have tried cinnamon powder and misting with water mixed with lavender extract which works better than nothing but not by much.