I've worked with the Cooperative Development Institute here in the Northeast to help a bunch of farmers start/legally form coops and had good experiences. Happy to chat if it's helpful.
https://cdi.coop/
Tamar Adler taught me how to love beans: https://ciaosamin.blogspot.com/2015/01/tamar-adler-on-beans.html?m=1
Y'all so FRIENDLY
So dsz