I second the suggestion about the box scraper. Another implement to consider is your basic back scraper blade. After I had all the piles of soil moved, the back blade was by far the easiest way to get my final grade. It's relatively light and doesn't tend to dig in like a box scraper can. It's also one of the least expensive implements, and comes in handy in the winter for snow plowing.
Other options to consider are back dragging with the
FEL or using a landscape rake. The rake is a great tool for getting rocks and roots out of the yard, but is less useful in the long term as the back blade. Your house, your money, your decision. Good luck and let us know how it goes.