I talked to my superintendant today at my school. He is interested in me mowing the school grounds. He said its 30-35 acres. During the early summer I may need to mow it twice a week. How much should I charge and could I even do it twice a week? I am using a 60" JD 757. I figure somewhere around 60/acre. Which for 35 acres would be $2100 a cut. Is this too much to charge? It would be mowing only. Gas here is about $3/ gallon.