yeah, the skid steer is way cool and would be easy altho it will tear up the yard.
Maybe hiring some day laborers for a few hours would be cheaper than the skid steer.
When I'm up against stuff like this I first think power tools but in actuality sometimes these things can be done just as fast the old fashioned way (wheelbarrow) when you consider the time to get the bobcat, load and unload it plus the time to repair the lawn.
On the other hand - you have a project with stones, some type of retaining wall, landscape wall, patio or something (you don't say) could the bobcat do double duty? In other words, can the bobcat help you in other ways for your project?