As a rule, i use the 3 best girls with the same sex skill as the judge.

In your example, Arcana is Hardcore, Rumiko is Know-how and Jennie is Charm.
Try for example, Bunny (Hardcore), Ankyo (Hardcore) and Arcana (Hardcore) with yourself as a Hardcore with items focused on hardcore. Your ego should be better.

Try to mix 3 girls with the same sex skills, i find it better. But, it is a point of view.