2 Why not us a wheeler or get yourself a pack animal of some sort eventually you will be too worn down to haul cords of wood out of the valleys.
We have carts, but the woodland terrain is too difficult. Most of our property is too difficult to allow for carts to be pulled by people (while filled with firewood for example). We end up dumping the contents. Its easier to just carry by hand.
I plan on building a people-sled.