They are a pain in the ass. Back when I lived on a small ranch, part of the responsibilities was to keep the place up, they had four longhorn steer and would bring 7 goats out once a year to help with the overgrowth of the weeds the longhorn wouldn't eat. They would eat EVERYTHING, garden hoses, electrical conduit from the well, fence boards, rope, plastic trash cans, the buckets marking the irrigation line valves, the seat off the tractor, EVERYTHING.
If you can keep them penned in a small area and move them around, it would be a awesome.
I recommend a riding mower and a twelve pack, way less stress. Lol