promiseacres
Herd Master
Divide the area by the barn into dry lots. I have 5 drylots on less than an 1/2 acre. It has better fencing they stay there in winter and during night otherwise. For sheep a catch area to handle them is a must! You don't know how fast they can be until you're chasing them around a smaller pen that just isn't small enough. For grazing here in indiana we can estimate 1000 pounds of animal per acre. That's a place to start depending your area. I would only fence off 3 acres to start, for the amount of critters I would do 1/3 -1/2 acre areas. but still plan on needing to mow taller parts unless you get more critters if you (don't be surprised you probably will have 20 sheep very quickly) . Keep the remaining acres as a nice hay field, if you can find someone to do it on shares unless again you have more animals.