Hello. My family is going to hire me to mow their lawns next year. 4 possibly 7 yards. 2 yards are 1 1/2 to 2 acre yards one with hills one completely flat. 2 other yards that will need push mowing are approx. 1/2 acre yards. And if I mow the other 3 yards they are at the lake ranging from 1/2 acre to 1 acre and invlove some hills. I will use my family's non commercial push and riding mowers starting out. If I plan to use some of the money to upgrade equipment later on do I need commercial grade mowers or noncomercial mowing only 5 to 7 yards a week from early April to end October?? Can I get decent mowers at Lowes mowing only 7 yards a week or do I need to go to an outdoor power equipment specialist? I saw a Troy Built zero turn mower at Lowes for around $2999. For what I am doing will this do the job? Or should I go for a 42 inch cut walk behind?? Sorry for the many questoins. Just need some advice before I start working for my family next year. Thanks.