Personally, I don't think Kubota makes a tractor big enough for you. The
M135x would be about right but even then it would be on the small side. 200 acres is a lot of farm. The closest farm that is not just a hobby farm around here is only 100 acres and their SMALLEST tractor that pulls any tillage/planting equipment is larger. They do have a lot of rented out a lot of land they farm as well so they probably have closer too 200 acres with that land. They run mostly Case equipment, don't know the models but they are row crop, not utility tractors - you are looking at a large utility. They do have a couple utility but are mainly for feeding the cows and and moving their crap around. If this is going to be how you make your living, and farming 200 acres will take most of your time, I would recommend a row crop tractor, that would take you out of a Kubota range so Case/NH/Deere are your big three options and then you have off brands like McCormick as well that will make tractors in this range.