Congratulations!! Your daughters have beautiful names 
[name_f][/name_f] From your list of honor names, I really enjoy [name_f]Ruby[/name_f] & [name_f]Dorothy[/name_f] for twins, and they sound lovely with your girls as well.
A few pairings:
[name_f][/name_f][name_f]Ruby[/name_f] & [name_f]Faith[/name_f]
[name_f][/name_f][name_f]Ida[/name_f] & [name_f]Ruby[/name_f]
[name_f][/name_f][name_f]Cora[/name_f] & [name_f]Marian[/name_f]
[name_f][/name_f][name_f]Marion[/name_f] & [name_f]Dorothy[/name_f]
Other suggestions:
[name_f][/name_f][name_f]Ramona[/name_f] [name_f]Faith[/name_f]
[name_f][/name_f][name_f]Hazel[/name_f] [name_f]Dorothy[/name_f]
[name_f][/name_f][name_f]Clara[/name_f] [name_f]Joan[/name_f]
[name_f][/name_f][name_f]Caroline[/name_f] [name_f]Ruby[/name_f]
[name_f][/name_f][name_f]Daphne[/name_f] [name_f]Ida[/name_f]
[name_f][/name_f][name_f]Flora[/name_f] [name_f]Marian[/name_f]
[name_f][/name_f][name_f]Louisa[/name_f] [name_f]Faith[/name_f]
[name_f][/name_f][name_f]Enid[/name_f] [name_f]Marian[/name_f] / [name_f]Enid[/name_f] [name_f]Ruby[/name_f]
[name_f][/name_f][name_f]Wendy[/name_f] [name_f]Cora[/name_f]
[name_f][/name_f][name_f]Dorothea[/name_f] [name_m]Ray[/name_m]
[name_f][/name_f][name_f]Tessa[/name_f] [name_f]Marion[/name_f]
[name_f][/name_f][name_f]Esther[/name_f] [name_f]Blanche[/name_f]
[name_f][/name_f][name_f]Penelope[/name_f] [name_f]Cora[/name_f]
[name_f][/name_f][name_f]Cordelia[/name_f] [name_f]Faith[/name_f]
Pairings from the suggestions:
[name_f][/name_f][name_f]Hazel[/name_f] & [name_f]Daphne[/name_f]
[name_f][/name_f][name_f]Wendy[/name_f] & [name_f]Enid[/name_f]
[name_f][/name_f][name_f]Cordelia[/name_f] & [name_f]Penelope[/name_f]
[name_f][/name_f][name_f]Dorothea[/name_f] & [name_f]Caroline[/name_f]
[name_f][/name_f][name_f]Louisa[/name_f] & [name_f]Clara[/name_f]
[name_f][/name_f][name_f]Ramona[/name_f] & [name_f]Tessa[/name_f]
[name_f][/name_f][name_f]Esther[/name_f] & [name_f]Flora[/name_f]
[name_f]Hope[/name_f] this helped! Best of luck!