Brush hogs

For my property, with a number of slopes and tight places, I'm guessing a walk-behind brush hog would be best but wanted to ask....

I've done some searching and wanted to know if such a beast exists - Cat. 0, 3-pt. brush hog driven by its own engine?

My tractor does not have a rear PTO, so a traditional 3-pt. brush hog won't work. There are a number of "pull behind" brush hogs (for ATVs, UTVs, etc.) that have a dedicated engine but it is like pulling a trailer - great for driving straight ahead, bit of a pain backing up. Many spots I would have to back into so being hard mounted to the tractor would be more convenient for maneuvering. I'm taking stock of the 5 acres I bought and there is a lot of poison ivy, grape vines, buckthorn, raspberries, and general brush that needs to be removed (buckthorn) or just brought under control.

I'm an "army of 1" with limited time each week so I'm considering my best, most efficient approach.

Thanks!