All good advice. Having the pleasure of a revenge stalker, I can tell you the country provides special problems to be aware of. Usually no one else is around in the wee hours, so if there is any watching that needs to be done, you have to do it, regardless of when you go to work. Get a dog. The more watchdog and aggressive the better. Some sort of security camera. You can blow a lot of money here if you aren't careful, so investigate before you buy. If you don't get a good one however you will be plagued with false alarms and then won't pay attention to it. Get one you can view online from anywhere. Keep your cell phone ready at night. If anyone else is with you, make sure they have theirs as well. Good, night vision is expensive, but smart criminals and felons have them. They can spot your infrared cameras like they are a flood light in the dark. They are a big help and I would recommend at least Gen 2 night vision of some sort.
If you have the old type of garage door opener with the 10 or 12 switches, you need to upgrade to a rolling block security opener. I replaced just the control device, cost about 100.00 and now the door is secure. You can get a scanner that will scan/interrogate the old door openers and it will (very) quickly find the code and open the door.
So that is a few ideas to think on.