you can probably level the similar core setup you did for nutaku. also level both yuyu and cloris (and nenya after) because all 3 will be useful, witch-wise. I'd actually give cloris an edge over yuyu early on because of higher dmg during skill which helps for phalanx 2.

the rest are pretty ok. anemone is a gold magic fencer which will help.
ignore gold ranger fuuka (bow with a trap icon), she isn't really all that good since you have bashira.
go get misha from either strategy lesson or urgent mission drill, she's generally better than elaine.
silver vamp hunter free is OP, you will want to level her as she'll help immensely in clearing desert maps. and you can get another copy of her to cc with in desert map 4 as well

nothing much to comment on for gold cannonneer mel and gold druid laurier. havent used either much myself so can't say much. mel might be worth leveling eventually for bombing thursday X tier, but that's still pretty far down the road.