Bashira and Spica > Victoria IMO. Bashira has better damage and Spica carries a higher non-skill damage, the added range can be helpful in situations as is her awaken ability meanwhile Victoria's skill is more for getting through high defense which you have magic to handle that which otherwise has lower DPS than your archers so archers IMO are more about thinning the heard and covering flying units. Not mentioned in this thread and probably should be are Pirates, Range matters where Vampire Hunters trade Range for DPS Pirates are just trading DPS for Range while Archers are the middle of the road with that said Pirates high base attack lets them be more effective against high defense units which I'd argue is what Victoria is trying to do with her Attack skill compared to Bashira's multiple attack skill which turns her into a significantly more damaging archer within that time frame, in addition to that with Beatrice being an event there can be a bias if you were able to min cost her.

Bottom-line IMO ditch Victoria. I personally prefer pirates over vampire hunters I feel archers do well enough against low armor targets as is to make the Vampire Hunter fairly moot carrying weaknesses and dealing with enemies that are dealt with easy enough through other means.