We've narrowed down our name choices to the following. Would really appreciate if you could say which you like best? Or point out any howlers about either I've not noticed 
Leila Clementine
Cassia Betsy
Baby is due very shortly and is a girl. DH and I are agreed on each of the name's spelling (Layla v Leila took about 2 months!) and the order of first and middle names is because he doesn't care what she has for a middle name but doesn't like either Betsy or Clementine for a first name.
Brother is Leo.
Thanks!