I've finally brush cut 7.5 acres, trimmed the trees of low limbs, and filled in the major tree stump holes and the like with dirt. Now I'd like to smooth out the land a bit. It is fairly flat, and the soil is firm but not rocky. The land surface is "lumpy/bumpy" with depressions up to 5-6 inches, and humps the same height. I'd like to smooth out (but not manicure) about 3 acres so I can plant some grass. I know I can rent a bulldozer, set the blade a few inches deep, and scrap off the land. What are the best implement(s) to acquire if I stick with my tractor (34hp, R-4 tires, 4WD, FEL), as I may tackle the remainder of my property at some future date.