One of Ayoob's caveats is the anecdote of a homeowner who shot an intruder with birdshot, apparently from somewhat further than ten feet away. The perp survived, but horribly disfigured and permanently blinded.
According to Ayoob the homeowner did not face a criminal penalty, but was ruined financially in civil court when sued by the intruder whose maimed visage swayed the jury.
Perhaps #4's in a good compromise, I'm wondering if #2's wouldn't be even better, short of OOO buck.
Birdwatcher