First off, I'm not a farmer, but every farmer I know would chase you off with a shotgun for suggesting that you strip the top and take a pile of fill out and replace the top. The way to handle the situation in my opinion is to search around a little and find some fill that some else needs rid of. A flat lawn with a steep back beside the road that obscures the view from the driveway, a hillside running down against a building, etc...
I have used these senarios to profit from myself. You need some fill so you make the homeowner a cheap offer, cover your costs of spreading the topsoil back out, tack on a little bit extra for profit, and get paid to get your fill. The you figure your loading and hauling cost out, be sure to add 10% for traffic delays, etc and bill the county for the costs of that.
In a for instance, I was contacted by a guy to do some heavy fill, he had a pull off with a steep drop off, like 25' of drop off that he wanted enlarged. He was on a 10 ton road, so repeated abuse by triaxle dumps would attract unwanted attention. So I looked around, and the neighbor was a golf course that had a long shed beside a hillside that ran all the way down to the side of the building. I swung a deal with the golf course that I could have the dirt for free, and I had no restoration responsibilities, then I sold the dirt for 5 dollars a yd to the property owner. hauled 4-5 loads an hour with my little single axle dump and my takeuchi mini doing the digging... did well on that one