here's what I'd do;
Fort up in the bedroom.
holler I'm armed and will shoot anyone who enters
call 911 from cell.
Tell call taker where in house I am, that I'm armed, and the PO leece need to know that. Sit back, aim at the door, and if it opens before I see red and blue lights outside,
one quick flashlight blast to be sure it ain't a cop, or someone I know,
then drop the guy like a sack of fertilizer.