My home defense plan is in place, but is top secret and can not be divulged online.
What I can suggest is to go outside your house and take a good look at your place with the mind that you are going to attack it and gain entry. Look for weak spots and entry points. then go inside and do the same. Where will they be coming in, where would they take cover if it escalated into a gunfight, where is the fam likely to be, all that sort of thing. and then harden. Make a plan. Make a backup plan. Discuss it with fam or roommates and perform drills.
You'll discover the holes in the plan and can tweak the plan to work. I have a little fun with it and me and my bud role play a little and pseudo attack each others home to test the defensive capability.