I didn't read all the post, but several.

15 yards is a pretty good distance - not unreasonable but our house is 48' long and I don't think I would encounter a perp at that distance. If you practice and are good, then anything less you should be better

I feel my needs will likely be the perp holding/hiding behind a hostage. I think about if that were to occur my accuracy would need to be hitting the perp in the arm or hand in attempt to get them to drop a gun or knife.

So my thoughts would be to draw two profiles and overlap leaving 4-6" and try not to hit the front silhouette (being a loved one or hostage).