I was thinking about making 7 spike pits in L 23-25 and M 22-25 with a row of Caltrops behind the large pit to hamper the orcs from getting out. This would set it up so some one could stand on the foundation of the town and ranged attack any orcs that might have fallen in from a safe distance, that is if that's ok with WD.
Is that ok with every one I don't want to place all the traps without every one's approval, and I realize I've only trapped the two enterances if the orcs attack from the north or south they will be useless. Another option I was thinking of was just a row of 3 pits at the western gate and a row of caltrops behind them with a spike pit at the center of town to draw the orcs into, but I'm probably over thinking this and the traps at either end will be fine.