Be very glad that if your family was home that we don't live in a antigun utopia, because they wouldn't have thought twice about braking in. But most punks know not to B&E a house in America when someone is home, because you don't know if they have a gun or not. And saying "I have a gun" is usually enough. You don't want to argue with someone like that.
Cameras are good but if you have the coin and you are really paranoid I would suggest a panic room.

I will keep my eyes out for scumbags selling anything that matches your stuff and report back. Sometimes you get lucky.