Have you looked into farming Tilapia fish? https://tilapiafarmingathome.com/default.aspx
Since you are looking primarily at own food consumption this may be of interest.
You asked if I would have trusted the dutchman around the power generation. Maybe not but since I lived there I would most likely have been looking after it in any case.
Some Toronto based company offered a local rancher friend the same deal about renting his land for wind farms. Nothing came of it. I syspect that after they finished their wind studies they realized it did not have the potential for sustained power development needed. Periodic strong gusts on some days is not as good as sustained lesser winds day in and day out.
Away from the coasts nothing is as good as constantly flowing water. at least not up here in higher latitudes.
