One more suggestion. After reading the last description of what and where you'll be using it, one more option makes it's self usefull.
An old fashioned, "drag disc" (as my dad always called 'em) The kind from before 3-point, before remote hydraulics were common. Since you won't be leaving your place, there's not as much concern over transport-ability. Most have a quick way of "un-angling" the gangs so they roll straight, without damaging turf so much. And they work so much better than MOST newer 3-point hitch versions.