3 acres is plenty for 2 or 3 or more... don't think you'll need that extra keep!
Heptavac in spring£££, clik in summer£££, flukiver or similar in autumn£££, worming when£££... (when, erm, high faecal egg count/ pooey bum / strict regular dose - oops not that anymore cos we don't want to increase anthelmintic resistance do we...) shear early summer£££, trim feet couple times a year depending on surface they are on£. But they are cheaper than a ride-on mower.
Please tell us about this wool to Japan scam! Do they give you more than the BWMB???