On POW if you want to use quads then use N set of 14', for small and lagre slot best tou use only front slots.
Other setup is 14'L quad on big slot and duals 14L (have diferent mark number but it is smae guns only have differnt housing) on small slot. You alo can use 16L from Nell together with 14L duald thay have sma renge, and triles if little lighter then quads.