In Florida, we have what's known as Castle Doctrine. It establishes , in law, the presumption that, someone who forcibly intrudes into your home or occupied vehicle, they are doing so to cause you great bodily harm or death. It also encompasses, what is being called Stand Your Ground, which removes the requirement to turn your back on the intruder and retreat. It also allows you to match force with force to protect yourself and others if you are in a place you have a right to be, such as your home or vehicle. It finally protects the person using deadly force, as allowed by law, from being prosecuted for using such force.
That being said, I'd put two to center mass and one to the head. Then, call the cops and change my shirt and put some pants on. I wouldn't bother taking my diaper off because they wouldn't be frisking me for any reason and it doesn't matter if I'm diapered.
I'd probably make an appointment with a therapist the next day, because nobody wants to take another's life.