Gather everyone in the most defensible location inside the house, call the Police and wait for them. If someone did gain entry then that escalates things significantly and might require you defending yourself. However, anytime someone is outside call the Police and let them handle the situation.
I've always maintained under those conditions I would (gun in hand)
gather the kids across the hall -we all slept up stairs-bring them in
our bedroom,call the local yocals and if someone banged at the door
without proper credentials,
I'd take action.