This is what came and cleared most of mine January of 2019.. This video is not from my property but it went from thick standing pines to that type mulch bed in 8 hours.
If you watch toward the end you see how deep it can go and mixes the dirt and chips pretty well covering up whats left of the stumps. I wouldn't be afraid to run a disk across it after this. Wouldn't touch it with a turning plow though.
I went this route over a dozer or excavator both of which I have access too and can run myself because there were no piles, or stumps left behind to burn or debris to haul off. I ended up with about 8-14" of mulch bed when he was done. I thought that much organic matter staying put to make topsoil was a positive. A few weeks after it was done I drug it with a cross tie to smooth it out. Seeded it in a winter mix and drug lightly with cross tie again.
A year later and the chips are decomposing very quickly. A lot quicker than what I thought it would. This same guy has a 375 hp subsoiler that as he says after the mulcher comes thru will make it row crop ready.


https://www.youtube.com/watch?v=y-W...K8HE6Du-ZpgLI1A4Q3_1TvMyYQtp_ptuTHI6UXy0


Subsoiler type video. if you watch toward the end with it raised you see how deep below the surface its going compared to the packer wheel.
. https://www.youtube.com/watch?v=47d07JJmr2E