You're not talking about 'earthmoving' if you just trying to smooth out small dips and humps.
I think you'd work yourself to death with a boxblade.
Did the same thing and with a little patience a good job results. Try a disk harrow and drive around discrete dips in circles gradually spiraling inward. If numerous dips then drive in strips one end of the place to the other.
Pay attention to lay of land, don't do it all at once, leave grassy areas to contain runoff and save your topsoil.
Depending on soil type after a heavy dew early in morning or after light rain drag the disc'ed area with a spike-tooth harrow (or drag old tires or railroad iron) to work out the lumps.
Get a little growth back where last disc'ed then move over and cut up a new area adjacent.
May take a few repeat passes but you'll gradually see the place level out.
Don't cut too fine so grasses come back fast and dust is reduced.
Consider dragging crossways to disc path and discing the next cut at right angles---you're trying to smooth, not till.
That said, you mention gardening: disc is handy to prep a garden area. Also great for cutting firebreak(s) around the place.
Spring-tooth harrow might work but better for pure garden cultivating than moving soil when compared to disc.
Implements? Brushhog (for rough cutting; finish mower if conditions allow), box blade, disc, gin pole, 6-way swivel-angle blade if cleaning or cutting ditches, bale spear (if needed), rear fork attachment.