For that small of an area, use the cutting bar on the bucket to push all the junk (saplings and brush) out of the way. Pile it in the middle and burn it if it can be burned safely. After that, it really depends on how much effort you want to put into it. You go as simple as fabing up your own harrow and drag that up just to "break" the surface of the ground. This is what I do. I basically drove some 1/2" rebar into some RR ties spaced about 12" apart, and left them stick out about 4". If the ground has been cleared and mowed, I drag 2 of those behind the tractor and then broadcast my seed and it works okay.
If you want to make a really nice food plot, clear it with the bucket (tooth bar helps, but the bucket alone will work if the cutting bar is in good shape), bush hog it as short as possible, then till it with a rototiller. Spray it as needed, go over it with a rototiller again, and plant it.
For my garden, I have an old walk behind Troybuilt tiller that I gave $600 for in good shape, as well as a 2 cylce Mantis that I bought used for $150. The walk behind gets used at the start and end of the year. The Mantis goes between the rows, and tills small areas, including my wife's flower beds. My problem with a PTO driven tiller is that it takes too long for the ground to dry out enough to get my tractor in it (Ford 1710 with loaded tires and a loader, weighs about 4,000 lbs WITHOUT anything on the back end). It would work well at the end of the year, but that's not enough to justify the added cost for me. A smaller, lighter garden tractor with a tiller would be a totally different story.