Should I equip this Empress Shoulder?

I recently bought a Lionheart Shoulder for 500m that was 7 attack, 3 lined rare, and a bonus pot of +10 attack, with the original intent of reselling it. (EDIT: In Bera).
Used a chaos scroll on it, got it to 11 attack.

I'm relatively unfunded, but I'm not sure if using this shoulder or selling it would be ideal.

Current Equips:
Empress hat -- 5 attack, Useless 2 line epic pot
Clean Empress gloves -- Useless 3 line rare pot
6% STR, 15 STR Neos Top
3% STR Neos Bottom
6% Half Earrings
8 attack, 3% STR Dark War Greaves(Bonus attack from Potential)
6% Tempest Ring
6% Tempest Pendant
9% Tempest Belt
6% Tempest Shoulder
Clean Mystic Eye/Face accessories
Clean Elite Hellasium Warrior Cape
Strong Ring S/Evo Ring III/ABR
Really weak 121 Reverse Nibleheim.

Now, I'm planning on using the 8th anniversary event to scroll a 170+ Attack Battle Scimitar and replace my equips with Empress, but I'm not sure if I should use this shoulder or not. I could either use the shoulder, sell the shoulder and buy a clean one, or sell it to buy something else. If I were to use this shoulder, I would likely sell the Neos top and use Dojo Gloves instead.

What exactly should I do? And are there any easy upgrades I can do?