For a moderately sized family farm (not agribusiness), how many hands (including family) would work on it? Conventional vs. organic? How many seasonal workers? What if there are free range cows and chickens?
Googling got me answers like "A dozen plus farm hands", or were ambiguous about whether the number included hands or not. Obviously, the number would vary based on the size of the farm and the crops, but those elements are not plot points in the story. How large the farm 'family' will be would make a difference.