redstone trap attack

long winding tunnel with lots of traps. 3 rooms scatterd though the tunnel that have zombie attacks.ive made some arrow cannons in 2 rooms and the last zombie room has a repearing floor and tnt cannons,splash poison cannons,arrow cannons,slow cannons and 5 dispensers with 30 zombies in each.its going to get a bit epic

play on servival mode and easy,normal or hard but not peacful or this wont work
creeper = blow up my redstone traps.dam creepers not good for this type of build