A well-built 216 will get the job done, but slowly. If you're planning to use the truck regularly with a full load on it, you'll need to be sure the brakes, steering, etc. are up to the task, as well as making sure the engine is in good shape. Once you get that load of dirt moving, it would be a really good idea to be able to stop and steer reliably. I'd suggest a minimum upgrade to a high oil pressure 235 simply to avoid the routine maintenance chores of keeping the babbit rods adjusted, etc. Heavily-loaded 216's weren't really famous for long life or lots of power.
Jerry