to answer your 4th post...I would like to personally turn our primary home defense duties back to our shotgun.
Some folks consider the shotgun a backup to the more readily accessable handgun. But, if you have time to get to it, do so.
I remember reading about some detectives investigating home invasion robberies in the East, who were so impressed with the speed at which an invasion could occur, that they began arming themselves at all times while at home off duty.
Sounds like insider trading home defense strategy to me. They learned things most people never knew, and acted on their knowledge.