Hello, I work in South East Michigan Metro Detroit area and i have an amazing opportunity to Clear 2 huge apartment towers parking lots and sidewalks. Only problem it I do not have the capitol to go a month or so without being paid and for the estimated 8 tons of salt needed per clearing. plus needing another truck to handle the other 5 commercial and 30 residential contracts i have. (Billing at end of month) If the price per clearing is about $8,000 and the trigger is 1in for salt and 2in for plowing is it a bad idea to ask for a down payment of $40,000 or so? Average events range from 10-15 throughout the year .