Terraria maximum mana achievable

I'm currently doing an Expert mode mage playthrough and I was wondering what the maximum possible mana achievable (on vanilla) is. What items should I use? What armor?

I've got maximum mana crystals, 6 accessory slots (demon heart, yay) and I can easily reforge them all to Arcane - so what accessories should I get if I'm planning on raw mana power?

Solution 1:

Accessories:

• Band of Starpower - +20 mana
• Mana Regeneration Band - +20 mana
• Magic Cuffs - +20 mana
• All accessories reforged to Arcane - +20 mana * 6 = +120 mana

Total: +180 mana

Armor:

• Hallowed Headgear - +100 mana
• Diamond Robe - +80 mana
• Jungle Pants - +20 mana

Total: +200 mana

Potions:

Surprisingly, there are none to increase max mana, potions can only increase mana regen

Other Effects:

• Crystal Ball - +20 mana

Total: +20 mana

Total of Totals:

Total bonuses: +400 mana

Max base mana: 200

Max total mana: 600

... except that the max mana cap is 400:

Including Mana boosts, the max cap is 400 Mana.