when the wife and kids are out, and with a rifle that has been rendered safe, or even with a mock rifle.....practice jumping out of bed, getting up from the couch, the dinner table, laundry room, mowing grass or whatever...and retrieve your rifle from its storage local and see how long it takes you. I am sure that it's not going to be strapped to your back during all of these activities.
Now try it with a toy pistol, that is always present on your body.
A good dog and a pistol is all that is needed...the dog usually deters bad guys, but a minimum give you an advanced warning.
don't live in a place that doesn't allows dogs, move.
weather you you use a rifle or not, the dog is the most important factor. If you can support and care for multiple dogs, get as many as your local law allows for, usually four. don't get litter mates, they will not get along in most cases, they can share the same parents as long as they are of different ages.
that concludes my public service announcement.