Happy Shiny Family

So when we were talking in crit about how my book feels almost like it takes place under one roof. I honestly don't see it, but I realize thats because I know that my roommate, my parents, and my boyfriend definitely don't all live together. Also I think the fact that almost everyone is shot in a different bathroom just gives away that they are not a family. I realize that no one was saying that its exactly like they are related but more of just the general feeling that is conveyed about it. Which brings up the question, should I add the pictures of my friend zak? Those are the first pictures I took for my project (I don't have the scans on my computer or I would post them) of the sort of angsty looking teenage boy. I wanted to include them because they are some of my favorites in regards to the space. I feel like when I was using the 6x9 initially I was paying a lot more attention to the framing of my photos and more focused on the composition than the subject. Maybe they don't fit know though, but I feel like my book needs more variety. Basically I cannot decide if I should include them. On one hand they would add more diversity to my book which too me seems limited in scope. On the other hand the shooting style is not perfectly consistent and it might detract from the idea of them being one happy little family.