Say reaching to your right 90 degrees to cutting 50 degrees to your left and dumping on your left 30 to 40 feet should be attainable. I've moved a lot of dirt this way when it's all I had on the job. Even moved piles this way getting on top of them.
I would prefer a big loader doing what he is going to do as a 973 like I usually use will push up and stack a berm of that size easily, but you have to use what you got. Heck, I use a skid steer a lot of times when I should have hauled a loader in but if you lean forward long enough you can get any job done.
All of this is in theory as not knowing the lay of the land and what kind of soil he's running in changes even the best guess.
I would prefer a big loader doing what he is going to do as a 973 like I usually use will push up and stack a berm of that size easily, but you have to use what you got. Heck, I use a skid steer a lot of times when I should have hauled a loader in but if you lean forward long enough you can get any job done.
All of this is in theory as not knowing the lay of the land and what kind of soil he's running in changes even the best guess.