Totally my opinion, you can comfortably ignore it, my if i were you:
1st:Solano, im a farne fan, cant help
2nd:Imelia, you lack 'another good' duellist->skip this, didnt see berna in the first glance
3rd:Waltz, your core is already settled, you dont have many units that can benefit from her greatly but still better than other aw options. Awing a mage, namely odette isnt needed, their aoe matters, hence solano. Noel might be too but do you really lack gold?
4th:Erun, actually she deserves upper place since its not very rare you'd need a 0 block unit with high def/mr also her passive is nice.
Others i'd leave at cced. Good additions to your team would be a fengshui user (marr/mia) and elizabeth/sue so i'd do my next rolling spree at their spotlight.