Don't know much about that tractor, but know lots about food plots. I would advise something in a 35 to 60 horse in a 4 WD. You will need the power if you plan to disc or prepare the soil. Also need a rotary cutter, a drag harrow of some kind, and a cone spin type seeder/fertilizer spreader. I would say this is the bare minimum if you plan to do it all yourself. Also don't forget a trailer big enough to haul it all. And even with these, don't expect "agricultural grade" plots. Using these implements is still rather primitive and will be hard work, especially on plots that are not established and previously worked. A box blade really is not necessary unless you plan to move some dirt or scrape out new areas. Get the heaviest disc you can afford. You can also plow before you disc but that adds a step, and it takes horsepower to pull a plow (and any decent disc). Your biggest frustration will be the in effectiveness of disking unless the soil has been previously worked or is better than most I see around here. Frankly, I don't see how you could make much money when you factor in equipment costs, diesel, transportation, and breakage. If I were to bill someone the actual hours and real costs of the time I spend on plots, I doubt they would hire me!
Buying used would not bother me if it had low hours and met my specifications. There are many name brands that would work just fine. I have a Kubota and a Massey, but a Deere, Mahindra, Ford, or New Holland certainly would also be great. But I would want 4WD and horsepower, and reasonable hours and decent R-1 tires. Also match your implements as far as rating to your tractor HP, or you will break something more often.