other than an axe, bow saw, and a long handled limb lopper and a cythe about the best choice is a DR Brush and field mower or a tractor and a shredder like a Bush hog or a Kingkutter or simular rotary brush cutter. Maybe you could find someone with a tractor and shredder to work by the hour. From my experiance a sickle mower isn't what you need. First it won't cut saplings or brush, and if it did it just lays it over and you have to rake it up and haul it off, a shredder will chop it up and scatter it around.