We’re in a great area, 3/4 mile from a very bad area.
3/4 of a mile from a very bad area is not a good area. Keep up your current practices. I would in your situation.
That's useful information. So there appears to be a credible threat relatively near your home. Consider moving. If you can't move, make your house a poorer target. From what you've written, you've already done that--dogs, exterior lighting, a clear field of vision, alarms, evacuation plans, drills, fire extinguishers, medical kits, weapons, locks, strong doors/windows, etc. Don't underestimate the value of practicing in advance for the most probable threats, because you want your response to be second nature.
Advice: Watch for scouts from those areas in your neighborhood. When you see some make it a point to clean your shotgun outside when they’re around. Your property, maybe even neighborhood, will be off their list.