"Right. The problem is, he and his accomplices may well well enter, very suddenly and with force, when the family is not asleep upstairs. That's the scenario to be prepared for. "
Through 83 posts the concept has been a night time entry while you are sleeping. I think my current plan is pretty good.
The day time scenario you bring up is the hardest to prepare for due to the endless number of variables. You almost have to either keep large dogs or keep a gun on your person all the time.