I currently own a Mossberg 500. It is the one that comes with 2 barrels-a 28 inch for hunting and an 18.5 inch for home defense. At this time I do not have it tricked out with anything, but I do like your ideas. I keep mine with the short barrel for home defense. I do appreciate your post.
Another thing-ammo is pretty well available for this gun, so stock up now! Tomorrow, things could change.