Lightning Blade J-328 and Opening the Sharingan Eye J-365

[[-Chidori!-]]

My Kakashi Hatake N-064 uses Lightning Blade J-328 (Choosing the +7/0 effect).
Opponent's Tsunade & Katsuyu N-US060 chains with 8 Trigram Divination Seal Spell Formula J-006.
My Kakashi Hatake N-064 chains with Opening the Sharingan Eye J-365, targeting Lightning Blade J-328.

What would occur? J-328's effect is "Choose 1 of the following". Would I get to choose again, or would it automatically be +7/0 again?

Thanks

[Mr Wheat]

the effect of J-328 is not chosen until the effect is applied.

so, each copy could have a diff choice.