It sounds like a good idea, especially since you have access to free feed.
Just be aware that with 2 acres, all the green stuff will be gone shortly, and you will be left with a 2 acre "pen", that requires you feed them every bite that they take, and gets muddy and schidtty when it rains.
Putting 2 of them on 2 acres is overgrazing it. Even one is pushing it.
