first thing to do...
Is to take some steps to secure your home so no one can break in with a minimum of noise. Proper locks on the doors and windows, with the strike plates in the door frame firmly attached to the 2X4s in the wall, not just the pine door frame. Proper lighting, motion sensor outdoor lights, indoor lights on timers. House number highly visible from front and back. If someone can sneak in your house and surprise you in bed, you can have a howitzer and it won't help. Read up on home security then have both guns in accessable locations.