Hi, Hydro101.
As others have said, there are a LOT of variables in there and it's pretty much a case-by-case thing as to how best to approach each job. For mine, this is one sort of work where I can really see a PAT dozer paying its way and an LGP model would be best to reduce packing as it does its thing.
10,000 sq. yds is not a large area in the grand scheme of things and a decent skid-steer with a good spreader bar would handle a lot of it, especially a tracked one, for similar reasons to those for preferring an LGP dozer.
Scrapers, especially elevating scrapers, are great for getting the soil from a nearby stockpile onto the area but they have their limitations when it comes to longer hauls. Trucks loaded by an excavator or a F/E loader can handle both short and long hauls but they don't spread their load like a scraper. Six of one, half a dozen of the other.
I think this might be a case where I'd be looking for a 4wd articulated loader with a 4-in-1 bucket for loading trucks as it could also spread quite well and, with a spreader bar as mentioned in the 'Fine/Rough dozer grading' thread, it could also trim pretty effectively. Water or other ballast in the tyres makes quite a difference to a 4wd loader's ability to push and dig and to its stability.
Just my 0.02.