But I disagree on one point... a weapon light. This is a HD weapon and the typical home invasion-type scenario is often in the dark of night. And unlike handguns, there is no way to hold a light while firing with a shotgun.
A good light is definitely a vital addition to a home defense long gun. However, it is possible to use a handheld light with a shotgun. There are several techniques for holding both the fore end and a light at the same time. Using a hand held light is a lot more cumbersome than a weapon mounted one, but it's an important skill. If you hear a bump in the night and find the batteries in your weapon mounted light are dead, it's good to know how to back it up with a handheld light.