Emmaline Margaret as part of this sibset?

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What do you think of these as a sibset? My nephew is Dominick Anthony. Nieces are Lilliana Rae and Scarlett Meena. (my brother's name is Michael Anthony Dominic, so that's where Dominick's name came from. My paternal grandmother was Lillian, hence Lilliana. And SIL's grandmother was Philomena, hence Meena).

Sister-in-law is tossing around the idea of another baby (YAY!), and has said she's definitely use Emmaline Margaret for a girl. What do you think? I'd suggested the name about a year ago when she said she'd want a third baby of her own (nephew is my brother's, but not my SIL's biologically). I personally love it. And Margaret is my real first name, and was my mother's name. They'd probably nickname her Emma (other girls are "Lily" and "Scar," lol, though I call Scarlett "Scarly"), though I also suggested Lena as a nickname, and SIL likes that too. :)

Also, any ideas for boy names? Their theme is that is has to be eight letters, can't be TOO off-the-wall, but can't be super-common either. I like Benjamin, but neither of them likes it (plus I just had a cousin name a baby boy Benjamin). Middle name would be either Michael (brother's name), William (dad's name, grandfather's name, brother's name) or Robert (SIL's father's name).