I would avoid the once a month customers. Weekly and bi/weekly are the most common requests for lawn maintenance. Occasionally, you will get that odd customer that wants to be on a 10 day schedule. A 10 day schedule is a nightmare to manage with a route. Be sure to charge accordingly if its weekly vs a bi weekly customer.
Rain in the forecast? What is that? It's dry as a bone here. We don't get rain here anymore.....