How about Rockland Mfg. out of Bedford, PA? I have an older catalog of theirs that shows that they can build a General Purpose bucket for a 980G in 6.5-, 7-, 7.5-, or 8-yards. They only weigh 5,400 to 6,700 pounds!
The phone number for Rockland is 1-800-458-3773.
By the way, what material do you have that needs to be moved in 7-yard chunks?
Piloting a Cat 980G sounds like a dream vacation of mine. Yardman1, you have heard of dude ranches where rich people come to rough it? Just transfer the idea to your situation. You could charge crazy money for seat time on your 980G wheel loader. You could get people with equipment addictions to put some hours on your wheel loader. Give them a flourescent yellow t-shirt, their own hard hat, and steel-toe boots. Put them to work and laugh all the way to the bank.
I hope that my first stay at your 'ranch' will be free since I gave you the idea.