My brother the actual farmer sent me pics and video earlier of him burning the one 100 acre parcel Im guessing he has plans for that one.If you’ll lease for haying or farming you’ll probably need to get a track hoe or dozer in to either pull or push them out. Track hoe wan’t leave rust near as bad as a dozer, but of course the dozer’ll do it quicker.
If you’re going to do only grazing, it won’t matter as much a about the stumps or ruts, unless you’re the guy looking for cattle going across the pasture, lol.