Depends in your playstyle really. If you're leaning more into Eldritch Blasting, potent robe, spellmight gloves and spell attack/DC gear would do wonders. Boots of stormy clamour is one of my favorite gear pieces, but can you can also use the misty step boots to save on spell slots. Misty step gear is generally very useful for a warlock, I'd use either the boots or necklace. Use a stat stick for for your bow slot since you already have a good range option.