Right on Aaron! The river crossings are minor most of the time; not much water flow and shallow. Just be alert in times of heavy rain. If you see the waterfalls getting big and the water turning brown then these normally small streams can become dangerous and powerful.
As for the narrow stretches around miles to 8, the only real danger is if these were to become wet and slippery. When the trail is dry there is no problem crossing these areas. The trail has been this way since I was a kid and I do not know of anyone falling off. W