I have this exact configuration for my home and it works great. Door/window/indoor motion sensors trigger an alarm. Frigate cameras outside ping me if the alarm is active but don’t trigger it outright. I also have a panic button to trigger it. I also have it tell me what triggered the alarm and have a list of the latest events. Lastly, make sure you setup an automation to let you know when batteries die. Typically happens after a couple years.