Get a disk .
Not a fan of big pto driven ground engaging equipment.
Been there done that, will never do it again.
I had a Deere top of line new 681 for my 4066R.
Using that tiller managed to sheer all these frame bolts on the tractor, after some extremely violent episodes with some hard clay soil. Only used it a short wile on this tractor but after fighting the slip clutches and doing damage to the tractor and about beating me to death in that cab. I am a firm believe any tiller bigger then maybe a small garden tractor 48" incher, is not a great choice. Needless to say that 681 tiller got traded off pretty quickly, and I bought disk. The Disk for bigger machines IMO is simply a much better choice for tilling. May have to go over a time or two or 3, but way less headache, backache and cost.
These action shots was the area that bounced and beat the tractor so violently that it sheered and snapped all those tractor frame bolts.