1) You may assume 2 fishermen per boat, and a rough figure of maybe 150 farmers per plantation.
2) Your Union is not immensely powerful, because there are no laws protecting strikers from being dismissed for striking.
3) 100 shillings
4) The An'Topi have a monopoly here of good stock; you will have difficulty making a profit through the sale of horses. Nevertheless, a stable of that sort would cost 100 shillings, with workers included; you can get a discount, perhaps, off the Lupus clan.