A few things.
You knowing your house really isn't an advantage. If there is a intruder who is willing to engage you, he (or they -- there could be more than one) doesn't have to know your house -- only that you're coming.
As for a flashlight, the intruder(s) probably know(s) you're coming anyway. And if you think you need to shoot, you need to identify your target. You don't want to shoot your spouse, kid or house guest who got up for a drink of water.
We know about the missing posts and are trying to figure it out.