I settled on a site after three years of ownership, after wheedling with my partners. I chose a place that was near our water supply, had a relatively nice view, and had plenty of shade. I chose a spot that had a downed oak tree. Clearing the tree meant I could have a spot that was within a grove, but would not disturb any of the living trees root system. It of course disturbed the moss and ants, but they will grow back.
I had done some investigation with the local storage container guy about his willingness to come out with his four-wheel drive forklift. Lots of people in rural areas use shipping containers for ranch storage. It was great that there was someone nearby who had the equipment. He said as long as there was level ground that his forklift wouldn't get stuck on, it would work. An incline was okokay, but not too much. I would not have chosen this path without first ensuring that there would be a way to get the containers on the foundation.
I hired a local guy with a backhoe to move the oak tree and level the hill with those parameters. That is, I did not want to disturb the site, but wanted a smooth ramp for the forklift to go up. He executed these instructions perfectly.