On Thomas' initiative, Osgar has the peasants hold back some of the livestock to breed a starting stock for Oak Circle in the Spring. This includes pigs, sheep, and goats. A young newly-wed couple agrees to come along, keen on the opportunity to be masters of the first farmstead. They advice against cows, which would need a lot of fodder; by the description, nobody with farming skills believes they could grow enough to feed them the first year. They also promise eggs and chicken in the Spring. The nisse will obviously also come along.
I´d say that this costs a total of £4 out of Ungulus incomes, and creates a starting income source of £1/year (surplus when the peasants are fed). Does that sound reasomable? Wait, the nisse should provide a bonus here; make it £2/year.