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I like using Vampire Knives for extra damage and a little bit more suitability when playing as a summoner. The Nimbus Rod is kinda nice too for extra damage and goes nicely with your other sentries.
EDIT: Having access to more damage to go along with your familiars never hurts imo.
Maybe you should consider regeneration potions as well as Rage(Crit)/Wrath(Damage) Potions(Possibly both)?
Melee Expert Mode Wall of Flesh with only Prehardmode stuff seems really difficult without getting damaged by the respawning Hungry.
EDIT: Ok, I really think you should make another...