So where I removed 12 inches of dirt to level my ground, I can back fill that up against the metal pool wall? Will this cause it to rust out faster? It would look nice, If I am understanding you correctly.
Yes, it is OK to back fill dirt against the pool wall. The wall should be well coated and rust should not be a problem. An extra precaution you could take would be to coat the wall with roofing tar before you back fill.