You don't need that many WG + KaMi + Daihatsu variant combo in the second fleet, like Ekel said it's not that effective against the boss. Put 1 or maybe 2 in the main fleet you will have better chance in sinking the artillery imp + Supply Depot Princess during day battle.

Then focus more on double attack with T3 or WG at night. Preferably change from 2CVL 1CV to 2CV, put 1 girl with the KaMi combo (your Hibiki, yeah I still call her kai ni with the name)
in the main fleet then put Gangut in the escort fleet (if you have spare engines for her). Gangut does insane damage during night battle.

This is my fleet, hope it gives you some idea.

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