I would suggest you include katie and yuyu. the former because she's used everywhere (2% def why not) and the latter for -1 cost, allowing her to potentially replace cloris completely.
Solano and Odette would be good AW units as well (Solano's faster cast speed iirc, can't remember Odette, but why not since she's probably your primary mage as well as being lvl 65 already. unless you wanna switch to Garania.)

might want to set aside materials for cuterie and monica AW as well, for that bonus drop rate.