Not being difficult, but another how long is a piece of string question!
I can only give you my own experience. It largely comes down to rainfall out here, I am not exactly sure where you are. We only get about 21 inches of precipitation a year, a lot of which falls as snow so I aim to keep one ewe per acre, with her lambs, and make hay from that same acreage. Now in England, far wetter, that would be a ludicrously low stocking rate.
Rules are made for breaking and my headage rate at the moment is about 200 ewes [plus lambs, plus making hay ] per quarter [160 acres] this could bite me in a drought year, then I would have to buy in some winter feed.
Some people here keep lambs in yards in a feedlot situation, either zero grazing or buying in feed. This has the advantage of no fencing, no worming, no predators and a very high turnover and stocking rate. More work but if you can source store lambs it can work well.
Good Luck!