Seems at a 4 day work week you could make 384 if working 12 hours a day.
I'd assume you'd work with a crew as to do a quick job on my yard is 1 hour (small yard), to do edging/trimming..etc it is 1.5 hours.
384 assumes 1 yard per hour as I know nothing about the business. If there are yards close and you could average 2, now that starts getting a lot sweeter for a 4 day work week. Especially since I'm sure that money is IRS resistant.
Wish mowing lawns paid more - enjoyable work the older I get.