zombie stronghold

‎1.fire ditch, with only one break in it so horses/cars can pass through
2.plank across the last to lines so people can fall back and light the ditches
3.palisade made of telephone poles
4. firing towers, where sharpshooters/ bowmen can cover the walls
5 and 6, main keeps/store/bunk houses

the breaks in the firelines are shifted around so takes zombies longer to reach the walls and gates,

gaps between fire lines are wide enough for riders/ armored cars to drive through and cut down any walkers who get though the fire

walls are tall enough where a standard 9 foot spear can reach the heads of walkers
bow men can hold the walls, with spears if arrows run out or low, guns and rifles should be only used if a section of wall is about to fall
please tell me what you think and your plans

repost for better picture