A defense plan for your home should be in depth. Passive measures like good exterior lighting, motion activated lights, good security doors with locks are the first line of defense. A loud external alarm if a breech occurs is the second, the alarm may scare off the intruders. More probably it will irritate the neighbors and they will complain to the cops that will serve the same purpose.
A call to 911, (In my case that is for record purposes only, their response time is about 2 hours.) necessary. Get the cavalry on the way.
I have concerns with the safe room which is not supported by an active defense. Basically retreat to a safe room gives the BGs free range of the home. When they find they cannot gain access they may decide to torch your home. In which case you and your family loose. i