Tempest Set VS Current Equipment

Okay so I was thinking about replacing my Corsair's current gear with the Tempest set since I only have a single piece of the Empress set.

But, I'm starting to think this isn't worth it and the math is driving me up the wall.

Corsair Gear:

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 Spoiler

Pirate Goggles
+15 all stat, 5 attack.

Homecoming Victory Jacket:
9 str, 5 all other stats, 2 attack.

Homecoming Victory Shorts:
+1 all stat, 2 attack.

Homecoming Victory Gloves:
+7 all stat, +8 attack

Sharp Green Leather Belt:
+1 dex, 4% dex potential

Shark Tooth Skipper Boots:
+16 str, + 15 dex, +12 dex potential

Half Earrings:
+4 dex, 6% dex potential.

Homecoming Ring:
+2 dex, +2 attack

Homecoming Victory Eqaulette
+3 all stat

Homecoming Victory 6 set effect:
+14 all stat, +10 attack

Legendary Maple Scarf:
+8 dex, +6 all other stats, 1 attack, 4 all stat potential

Blue Donkey Balloon:
+5 attack

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Tempest Set:

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 Spoiler

Tempest Feather Hat:
+7 all stat, 1 attack, hidden potential

Tempest Hooded Robe:
+8 all stat, 1 attack, hidden potential

Tempest Gloves:
+7 all stat, 1 attack, hidden potential

Tempest Shoes:
+6 all stat, 1 attack, hidden potential

Tempest Cape:
+3 all stat, 1 attack, hidden potential

Tempest Epaulet:
+6 all stat, 3 attack, hidden potential

Tempest Ring:
+6 all stat, 2 attack, 1 upgrade slot, free potential

Tempest Belt:
+6 all stat, hidden potential

Tempest Earrings:
+3 all stat, hidden potential

Tempest Pendant:
+5 all stat, 1 attack, hidden potential

Tempest 8 set bonus:
10% HP/MP, 30 all stats, 35 attack

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So...yeah. I'm really not sure. The potential on the tempest stuff could really give me a boost, and the Tempest set bonus is really nice. But it would require me to change everything except for my weapon.