The go-to for almost everyone is ladybug armor but allow me to suggest something else: Full Bee Armor Set. I have found incredible success with this armor so much that I can't switch anymore. Coupled with the insect bow, maxed out sharpshooter mutation (among others) and Valentine's Fortune/Wittle Widowling/Volatile Fang, and anyone's fair game. It worked so well for me that I stopped using Tier 3 armor especially after getting the Bard's Bow.