Customer has cleared an area of trees about 35 feet long by 50 feet wide. It sits about 1 to 2 feet in some areas lower than the grade they want. They are looking to park 2 boats and a 4 place enclosed snowmobile trailers. Think the best way would be to bring it up almost to grade with fill and then use maybe 6+" of 3/4" stone? Or should I use bigger stone or a deeper amount? It will need probably a couple dump trucks of fill and a truck of stone. What do think with cost appx.? I will be renting a skid steer also.