Interesting point about visibility into the house. We are at the top of a hill, which means from the street even with window treatment wide open, people can only see top of the wall and ceiling. That said, we have the ability to block visibility into the front of the house.
Don't ask me how I learned the lesson that neighbors can see through sheer curtains. Let's just say that in my younger days I put on a show without intending to...
I don't think one can give/get too much advice about gun safety. It seems that the firearms community is very safety-conscious, and with good reason. I've been a member of several automotive forums, and even though avoidable vehicular accidents cause far more deaths than firearms do in this country, there are relatively few threads on car forums where people stress the fundamentals of driving safely.