Ah but see, a firearm requires cleaning, oil, and ammunition. The suppressed sidearm will lure in your neighborhood while anything unsuppressed is going to call everything within 8 blocks right to you. Dog is a mouth to feed, mess to clean, and is also loud unless you’ve trained them very, very well. Making light isn’t hard but everyone can see light - including zombies. NVGs are just for you. Water you can clean yourself but I assume you mean boiling which would need a fire… and everyone can see the light and smoke.