I purchased my house a couple years ago. It sits on ~1.5 acres. The previous owners rode dirt bikes, drove trucks and everything else through the yard and completely ruined it. There are ruts that go clear up to the axles of truck. Other sections, like where the redid the septic system are kidney hurting when mowing. There are some sections where it dips down a foot and then back up within a five foot length. I have a 1025r with a backhoe, bucket, box blade. I need some suggestions and best course of action to take to help level this! I'm thinking maybe getting a tiller and tilling it all and using the box blade to move from the high areas to low areas? Maybe a land plane? It's all grown sod/weeds. Attached is the image of where I need to fix. It's around an acre or so that needs repaired.