Archers get 40% dmg vs air units after awakening right? or do they have some %age with CC?

In any case, Bashira is a solid dps (from lolix: 559) and adding prince and 40% and triple shot... she will deal with aerial units rather fast.
And even vs. ground units, Bashira can > Spica just on some scenarios where 1 strong arrow isn't enough. Such as fast armored wolves or the likes.

Personally i'd prioritize Iris, her placement-heal is really useful