What Items Should I Keep??

I've been having trouble with my bank space, and I have many items and armor I've received from quests (Aerolia Boots, Santa Hat, Skeletal Legs, Treasure Boots, Shameful Greaves, Hallowynn Mask, Cassiop's Masterpiece) and I want to keep them just because they are unique and I have no idea if I'm able to reobtain them without using a different account. Could someone give some advice on what to keep and what to sell?

 

Keep the items that help you get in certain places like the climbing helmet

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and items that you need for other quests like the crystals

 

you are able to get quest reward items back from leveling another class and doing the quest yeah
i'd just get rid of the aerolia boots, and the skeletal legs

 

Skeletal Legs : just some random piece of armour, pretty useless
Caissop's : You can sell it at the Cinfras Airbase for 3 le if I remember correctly
Treasure boots & Shameful greaves : Keep those if they have high loot bonus
Hallowynn mask, santa hat : rare collector items, keep those
Aerolia boots : throw that

 

Thanks!

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Are the Greaves worth keeping with +25% loot bonus?

 

worth keeping: Yes, when you don't have better loot/xp leggings (for grinding), but they're worth like nothing