Ok I'm in the dirt moving industry, and i agree it will need ripping before a wheel loader is going to do a damn thing with it besides spin wheels. I noticed in your overhead picture though that you want to move the fill to where all those trees are...they'll be gone i assume? If you bury the roots on those trees too deep they're going to die. Sorry if i missed all this somewhere in the 7 pages, I responded to page one.
Edit: after reading all 7 pages, I'd agree with whoever said backhoe. use the hoe to rip up loose piles and the bucket to move the fill. This is one scenario when a backhoe is really useful, but if money wasn't an issue would still rather have a mini ex and skidsteer than a backhoe. A backhoe is decent at digging and decent as a loader, but not ideal for either in my 20 years of experience, but sometimes it's just the right machine for a job. This sounds like one of those cases.