Gentlemen,

I would take a Benelli Super 90 M3 loaded alternating with buckshot and slugs.

In less than three seconds all 9 shots can be on their way, which makes up for a lot of missing caused by the shooter... :-)

Sidearm would be a S&W M29 .44 Magnum with 180grs JHP,
not to mention an Heckler&Koch MP5 on Full Auto (just dreaming)

And a light body armour vest would be a "nice to have", also two nice 100lbs pit bull terriers :-)

regards
Rolf