I’m loving [name_f]Cecily[/name_f] & [name_f]Penelope[/name_f] the most! I don’t like the idea of using another g name and [name_f]Georgia[/name_f] and [name_f]Norah[/name_f] sound too similar for me 
In terms of the boys I really like [name_m]Alistair[/name_m], [name_m]Louis[/name_m] & [name_m]Todd[/name_m]!
Some other ideas:
[name_f]Tess[/name_f]
[name_f]Annabel[/name_f]
[name_f]Eleanor[/name_f]
[name_f]Polly[/name_f]
[name_f]Sophie[/name_f]
[name_f]Felicity[/name_f]
[name_m]Theodore[/name_m]
[name_m]Frederick[/name_m]
[name_m]Edward[/name_m]
[name_m]Charlie[/name_m]
[name_m]Oliver[/name_m]