Thats a good deal.  We have several places like that around here in South Louisiana.  The items you are talking about I prefer renting them from a guy like you because when they are having trouble with them out there I can't troubleshot.  The worse thing a company wants to do is talk to someone that doesn't know anything.  True story first year I got into the office from the yard a company man told me "I need to talk to someone that knows something son, cause you ain't there yet."