“Or drag the body into your house in case he drops on your front porch!”
Think hard before doing that - police don’t like crime scenes that are re-arranged (unless they’re pro-Second Amendment).
And then they REALLY don't like it. Because they may end up having to arrest you when you were in the right, up until the moment when you tampered with evidence.
You made a clear cut case of justifiable homicide into a murky one that is going to, at best, leave a cloud over your reputation forever.
Never touch the scene.
Never talk to the police with out your lawyer.
Never talk to anyone else about it either.
Taking a life even when it is in the defense of your self or others is a heavy burden to decent people.
Since you are a good person and you want to justify what you did by talking it out.
Don't.
Keep your mouth shut, before, during and after.
That is the price you will have to pay.