I think it would be hard to do with a skid steer or small excavator alone. You need to rent a Cat D5 or equivalent dozer, plus the skid steer with large bucket for moving dirt rapidly. Plus, a pull behind sheepsfoot roller would be nice, also. The pond guy around here has a well equipped Cat D6K-XL with ripper on the rear. A skid steer would probably take two weeks to do what he can do in a day, maybe even longer, or never if big rocks are involved. I don't think they rent anything that big, for transport reasons.