Setting up base defences

Hey everone, I would like to ask you for help with setting up base defences especially redgaring changed brazzier mechanics. My friends were thinking about building our walls like in the attached picture
with walls being plank fence, stone hedge, split-rail fence, makeshift fence placed close together with no tile space. As we understand raiders will be always shot only by a single brazier. Since we have no salem experience, we have no idea if this kind of defense would stop anyone, or maybe its just a walk in a park for a good raider. We are pretty confused if placing brazziers within a range of other brazier would do us any good (maybe in different walls setup?). We will happily take any critique on this design and listen to any tip you can give us. Any help is really appreciated!
