i really dont think your to late, but i would get on the ball. spray roundup tomorrow on what you want to plant, dont bushhog first, roundup will not kill good because there will be cut grass lying on top of what you want to kill. then when it die's out, approx 10-15 days, if its possible burn the plot. this will clear out much of the weeds so it makes it easier to work the ground. Spread your lime 2 ton to the acre if your dont already have a soil test. make sure that you do get a soil test,they are free at your soil conservation office. this fall i would only plant an annual plot, something like winter rye or buck forage oats, i have great luck with them.maybe add some rape or turnipsor red clover. then late next spring or early summer you can go to work getting your plot like you want it to be. you can do it two different ways here. one way is to work the ground up and when the weeds come up spray them, after a couple of weeks work it again and continue this through the summer. orif you could plant roundup ready soy beans in the spring that would be great, roundup will kill the grass and weeds and the beans will grow. you will never get ride of all the grasses and weeds, but it can be made more managable. i have 5 acres of plots on my 100 acre farm, they take a lot of time and money to keep them in good shape, but they are worth it when fall comes around. now get to work on it ...