I came very close to doing something like this a few years ago. I have hops vines already and I grew malting barley with the intention of malting it and making a batch of beer with my own barley and hops. I had decided not to use wild yeast for fear of ruining a batch after al that work.
The barley did very well and I harvested more than enough. Unfortunately, when it was drying in a shed rodents got to it. I was pissed.
I will try again, this time I will dry it in my cellar.