Epistemic rationality is about forming true beliefs, about getting the map in your head to accurately reflect the world out there.

Since the map describes itself as well, not just the parts of the world other than the map, and being able to reason about the relationship of the map and the world is crucial in the context of epistemic rationality, I object to including the "out there" part in the quoted sentence. The map in your head should accurately reflect the world, not just the part of the world that's "out there".