You're on the right track, I just haven't seen to many 1 pass options that works well with the 8n's. Using that type of tractor and equipment, you'll need to use the practices that were employed when those tractors were modern. Fall plow, winter to mellow, spring harrow, a few passes with a disk, and after that, don't expect to take a brush patch back to an onion bed in 1 year. For a food plot, you can get alot to grow without having a perfect looking garden. You're on the right track, spraying before tillage and letting the previous ground cover actually die before tilling will help you out alot. For our plots, we hit them last fall with the plow, and I made a pass over them with a disc this spring, they were good to go, but we ran out of time before the rain. Will probably have to disc again to knock down weeds before planting. There were a few brambles coming up, but they plowed under just fine. That 8n should pull 1 bottom, or in some soils 2 just fine to plow and then you might consider a better disc, that will help you out as much as anything, weight per blade will determine the effectiveness of a disc, and having new or notched blades also helps. Alot of it is expectations and patience. Sometimes I don't have either so resort to a bigger hammer...but then am fortunate that Dad still has his equipment around. We'll typically plant about 10A or better of plots a year, and this is WAY overkill for that, but it leaves more time to fish.