Hi! You could start looking within the next month or so. I'm sure I saw a sale of in lamb ewes advertised for some time soon at a local auction. Depends where you are. The further north you are the later they tend to tup. As far as getting them home is concerned, they should be fine, but you could try to buy as close to home as possible. I always keep any new stock away from the rest of the flock for two weeks. Hope this helps.