Need some landscaping done

I'm trying to decide what to do with the yard to the north of our property. It used to be fairly heavily treed with a couple of beautiful azalea borders but years of neglect have led to about a foot deep of accumulated debris, tree branches and weeds. Last year we got the tree guys in to take out the dead and decaying trees and they also took away the heavy branches and tree limbs that were on the ground. We then weeded and got rid of the debris: sprinkler hoses, bricks, bluestone pavers (we recuperated those by extending the path) and dead bushes still wrapped in hessian that never got planted.
What remains is ivy, smaller branches and some old tree stumps. Now what we need is a digger to come in and haul away the top 4-6" of ground so we can get a clean start. This area is about a tenth of an acre so it ain't gonna be cheap. What I was wondering is if someone were to tip off the FBI that Jimmy Hoffa was buried here would they dig over my yard for free? And could I sell souvenirs to finance the new landscaping?