We had three acres when we lived in Virginia, and we spent a lot of time mowing our lawn there. Now we have seven acres and we are really glad we have horses to eat much of the grass. I mowed the front yard last week:
I am joking of course, because four horses is more than enough. We will fence this in and rotate the horses and from what we see next door, they can keep the grass down very well if they are allowed to graze the whole area.