_I_ would use your Minerva account.

Bernice is a staple unit.
Julian is an okay second soldier until you can get your hands on a Jerome (or another plat, or Aria).
Cuterie, despite being next to useless to sortie with is good to bring along when you want affection gifts.

Sophie is a great unit, but isn't always needed... or always even useful on some maps. Minerva can be used more often (at least I find). Kojiro is garbage tier, the extra iris is nice for the CR and SU, but I mean hardly needed and ugh, the Conrad twins... they just ruined that account...

But these are all just my opinions. Minerva is amazing, even more so if you one day snag an Anelia, heh.