Love your plan. Lucina is perf. As much as I love this classic dumb grunt business I just have to say that not all of Jackdawl's soldiers are dumb jocks and crazy sluts, he can recognize every single member, knows them by name, and they practically worship him like a god, he saved most of them from the likes of drug abuse or psycho wards or jail, like i'm not upset or anything i'm just saying. It's like a big family of fuck ups that are following their hero :') 

Did you wanna make Benjamin a character or do you want to have the satisfaction of killing him in the library?