I greatly appreciate folks' replies and am rethinking strategy. Chose the shotgun over other weapons due to concerns about being able to hit accurately in the middle of the night, when not fully awake, and with hands that sometimes are asleep/tingly. Aging sucks. Now thinking about birdshot or huckshot, given that issue.
No worries about hitting neighbors out here. 🙂
Taking a course such as alphat mentioned sounds like more than a good idea...