I also agree with staying together. first off, i don't want to rely on someone keeping their plan, remembering their role, etc. too many variables especially when emergencies arise the stuff hits the fan and the link in that chain can break.
Does anyone here have an example of a home invader shooting through stairs or floors that didn't happen in a movie? No? Lets prepare for problem one- not problem ten.
that doesn't change the fact that the stair stand would be bad at best in my situation/home. If the BG knows where you are he has a better chance of giving you a really bad day or headache. you need to look ahead at the chain of events that can occur with decision to problem one so other cans of worms aren't opened.