OK what I would recommend in an ATV disc will be one that has slotted disc(larger the disc the better)
you want one that has adjustable cut, you want one that weights at least 300+ lbs, , weight will be your friend,as long as you DON"T go too wide
I would stick with disc that are under 48 inches wide
as after you get wider than that your really taxing your ATV/UTV
sine your planning to do acre sized plots, MY better advice is, SAVE up and BUY an OLDER tractor, and save your atv/utv a LOT of wear and tear,, if you look about , you can find them pretty darn cheap, and even find cheap 8 ft drag behind discs even cheaper, and get 3 times the world done in half the time, and NOT killing your atv!
smaller tractors like the older international model H's, up to about 340's
Fords, 8N's and likes,
these cn a be from the 1950's and up, and there proven to be reliable simple CHEAP things to work on and keep going, way over build tractors from back in the days when the average owner was far from educated and able to work on them, and they were built to LAST< not throw away things like modern era, and more parts available than you can ever need!
a GOOD tractor and disc can be had for about a grand, if you look about!
and be one of the BEST investments you will make in the food plot game!
something to think about
yes an ATV/UTV can do plots, but its VERY hard on them,