Board Thread:Fleet's Prepared-ness/@comment-178.24.24.138-20151022230154/@comment-60.53.104.67-20151024042959

If you have at least 3 other elite CAs at high level, the need for Choukai goes down somewhat, since the skilled lookouts isn't necessary and the Type 22 Surface Radar k4 is also available from a quest chain that needs Myoukou K2. It is nice that she has the highest firepower, but it's not like the Myoukou class K2s are slouches either.

Tone/Chikuma would be a good call since their high LOS, superior stats to their CAV peers and rare equips mean you get a lot of bang for your blueprint use. The first Tone-class K2 has more value than the second one, especially given that your other CAVs are fairly high level, so no need to rush both of them now.

Fusou/Yamashiro K2 should only be done if you don't have enough Nagato-class (or better) BBs. Their BBV advantage hasn't been put to much use yet, though with the new plane system it is possible they can take out a weak target with their Zuiun 12 at max proficiency.

If you feel comfortable with your current ships for the event, then you can just skip straight to Bismarck Drei. Her use as an escort fleet ship was underlined last event, with E7 barring CLTs. This adds to her overall usefulness (good armor, CA-level NB performance etc.), so getting her would be a good choice.

TLDR; Bismarck*2 = Tone/Chikuma + Choukai (if not enough CA) OR Tone/Chikuma + Fusou/Yamashiro (if enough CA).