That's A LOT of meaties in that space and there won't be much "range" left after they have trampled and pooped on it all, so they could do some temporary damage on it. If you want them to actually range for food, if they are any good at it, they will have that area picked clean of bugs and such in no time and most of the actual food and clean soils will be pretty much depleted before butcher time, I'm thinking.