The hillside slopes about 10 feet down for every 40 to 50 feet horizontal. It has some softball to football size rocks, most of which I will police up. Grass is about 2 feet tall now, by the time I buy maybe 3 to 4 feet; but after it is cut once i will keep it under 8inches. I don't need a finish cut, and I will only cut every other week so 3 to 6 hours to cut it is okay. What do the experts recommend?