I decided that a walk behind tractor is not the right tool, even for minor driveway repairs, due to weight and traction limitations (gravel is slippery and sets up very hard). Hoping for more was a long shot in the first place. I've been looking for all the ways I might be able to use a BCS 853, since I am thinking it would be a good fit for the scale and terrain I'm working with.
Thanks for the ideas!