Hi OP, congrats on the pregnancy and based on your requirement of unconventional here are my thoughts (I would add that these conventional does not necessarily mean Claire, Jane, Rachel etc as they are the unconventional names now!!)
- Luna - not unconventional because Harry Potter
2.Sky - not unconventional any more.
3.Primrose - yes and a lovely name.
4.Daisy - very popular now.
5.Emmeline - popular
6.Henriette - Is this french? Not sure she would grow to like it!
7.Fleur - nice and unconventional.
8.Scarlet - very popular.
9.Lottie - short for Charlotte which would be good to use so she'd have a grown up name for later on when she wants a professional job.
10.Polly - nice and not popular.
11.Lara - conventional
12.Laura - nice and not that popular any more.
13.Lyra - sounds like a stationery manufacturer.
14.Elke - Very unconventional but not too weird and people will know how to pronounce it because Elke Brookes.
15.Posy - popular now.
16.Pansy - please don't.
17.Clara - popular
18.Levi - boy's name
19.Lovi - not heard of this one before.
20.Adaline - getting more popular
21.Alara - not heard of this one before
22.Elara - as above
23.Rosalina - pretty and not too popular I don't think.
24.Leia- as in Leah? If you use Leah that would be unconventional
25.Adelaide - unconventional I think
*26.
Primrose
27.Harbour - please don't.
28.Esme - Really popular these days.
29.Elora - never heard of this one.
30.Alora - as above.
So based on this (and excluding names I have never heard of), it gets it down to Elke, Primrose, Rosalina and Fleur. As you, I imagine would not want two flowery names together you could do:
Elke Fleur (this sound good actually)
Elke Primrose
Elke Rosalina
Primrose Elke
Rosaline Elke
Fleur Elke.
Of these, I would choose Elke Fleur.