User blog comment:Juuryoushin/Extra Operation Guide: 5-5 - The Tail of a Dangerous Salmon/@comment-1421453-20160325170206

I've been using 1FBB 5CV compo for a while and I think it's not as reliable as 2FBB 4CV one. The reason becomes obvious in the boss battle. I think 2FBB 4CV is better, and it shouldn't be grouped together with the other compo.

3FBB 3CV also sounds interesting though.

And Hiryuu sisters can reach FP cap with only 1 bomber, so it'll be better to give them 3 radars.