Id ask them rather than ask here, id aim for a quality standard of good enough instead of resi A grade and keep the price down.
i have one strata, i asked about a programme and regular invoicing. Didnt want it, mow and invoice each time, i just do it when it seems right and got the perimeter hedging without quoting in winter.
i have a business, 35 "visits" a year, weekly in summer a bit of fortnights and 3 weeks in winter. the dates are known for the year, 12 equal monthly invoices.