Our friends farm 160 acres with their JD 5320 4WD. They also plow, disk and cut hay for several others around here. Having run this tractor several times myself for disking it is truly a nice tractor that works hard, is comfortable, and very reliable. The owners bought this 5320 new and take real good care of it, always wintered inside a heated shop and getting the best of care. 4WD is the way to go, any late model brand having 4WD and 35hp or higher will do what you are asking if set up correctly and having suitable weight. 4WD with weight for the job, along with good dealer support are most important. if buying on the cheap while forgetting these rules we ask for trouble most of the time.
My Kubota L2501HST can easily do what you are asking, sometimes it is slower than I'd like but it can really surprise me too on what it can do, especially on our steep and hilly driveway of 2200 ft. where maintenance is on-going year around. My dislike for emission stuff kept me with the limits HP wise so I just accepted the fact I'd be working a little slower on some jobs. So far, only long and heavy field grass on slopes has slowed this tractor with 5ft brush hog but again, I just run it slower up the few hills is all.
Ricn