I've never tried this tek as I'm new to cultivation BUT after reading it, I'd suggest using PF-TEK or better yet, the Simple Cubensis Growing Technique.This substrate in the tek above has only 1/4 cup of brown rice flour, so I can't imagine the yields being that big, whereas pf jars have 1/4 cup brf PER JAR.
I can see this casing method above being contaminated quite easily.
But if you're really strapped for cash go for it and let us know if it works.