4 Sco 8 or above with decent GBE (4 or more statues) + decent TH and TD is enough and lossless. Shoot both BCs and 4 cannons, which are closer to the beach. Deploy 4 Sco on the left. Shock and possibly drop critters on the mortars, then drop critters (when convenient) on the remaining two cannons. Enjoy the show. Flare / shock / drop critters around if necesary.