How do you drink your beer that way?
Disc and drag are the only way to ensure a really smooth surface. You'll have to make several passes to get it done.
Use caution when working on hills. I assume you don't have a tractor yet based on your initial post in this thread and lack of information in your profile. If so, I'd get a tractor that permits the wheels to be adjusted for a sufficiently wide stance to minimize rollover risk.
Good luck.
Follow up to my previous post:
It doesn't cost a lot to rig up a disc and drag combo. Here's one that I use on my 6-acre hayfield.
View attachment 343687View attachment 343686
That is good for a crop field but what if your wanting to do your yard, wouldn't you need to pack it down some afterwards? I have the same issue with old tractor ruts.