It is not going to be a one time thing and it's fixed, you need to sell the on that for sure. I agree with all 4 people who have responded. I would add that I would avoid esters on such a wide open area and as high as you will have to set your boom. Off target drift scares me but I live in an area with many farms (apples, grapes, and tomatoes are especially sensitive). This could be an interesting project.