A lot depends on the layout of your home/apt. Most all are different, we know that. I don't think that there's a "one size fits all" plan. Response time from LEO's could be a deciding factor in your choice of weapons. Hiding armed quietly in an obscure basement or 2nd floor closet for 4-5 minutes would IMO, be better than a shooting. If response time is longer, it's your castle, only you can know the best way to defend it and those inside. It's not rocket science, and chances are that the intruders are not rocket scientists. They are there to grab some valuables and get out. Intruders doing a slow and methodical room by room, closet by closet search is rare. Besides, they're probably stoned and have no plan. My $1.00 worth.