Is the barley mainly for cattle fodder?

I think I'll grind a small portion of the rye and keep the rest to be sown later on.

Hmm... If, in some future years, I'll be growing and processing bigger amounts of grain I'll need some kind of machinery. I think some of my neighbouring houses are still storing old-fashioned grain processing machinery in their barns. They are belt-driven, so any kind of engine producing rotational movement could be harnessed to run those machines. I think I could go investigate those machines, and then try build a smaller version for my own usage. But, at the moment that is not the highest priority for me - maybe in the coming years when I get the house renovation project completed I will have more time and energy to tinker with building all kinds of apparatus =)