I am currently mowing 20 lawns and going to high school. I have a 2004 48" Lazer HP, new Stihl 4-mix trimmer and a Stihl Backpack blower. I want my Dad to go in business with me so I/we can expand. We would work 4 days a week after school and work for 4 hours. Thats about 16 hours a week. We would also buy a 48" walk behind. My question is how may more lawns do you think we can take on with both of us working? Thanks P.S.- The lots we mow are a quarter of an acre or less.