I did a bid on a car lot the other day. Nothing but hills. The front hill is 600 ft by 50 roughly 45 degrees plus I can mow all of this with the w/b The middle hill is 400 ft by 50 roughly As steep as they come. Can only w/e The back hill is about 800 feet by 50-100 45 degrees plus I can mow half and w/e half. The place is full of rocks big ones. 110,000 square feet of hill. any sugestions on price?