No, I don’t think it’s terrible that [name_u]Avi[/name_u] is close to [name_f]Aveline[/name_f]. It’s not like you say [name_m]Cove[/name_m] [name_f]Aveline[/name_f] all the time, do you? Now, as much as I’m into this reverse match thing, I’m not sure you should go and name her [name_u]Avi[/name_u] [name_f]Colette[/name_f], with [name_m]Cove[/name_m] [name_f]Aveline[/name_f]. That seems slightly silly. Though I love [name_f]Colette[/name_f] so much - [name_u]Avi[/name_u] [name_f]Nicolette[/name_f] might be more acceptable. (Not that you’ve got [name_f]Colette[/name_f] on your list, just saying…)
To be honest, [name_u]Avi[/name_u] might feel more boyish to me than [name_u]August[/name_u], if only for the fact that [name_u]Avi[/name_u] is more of a traditional male Hebrew name. I’m not at all saying I think it has to be a boy’s name, and I think it works well with [name_m]Cove[/name_m] for a sister. It does get you into this V thing, with [name_m]Cove[/name_m] and [name_u]Avi[/name_u], and back to back, they’re a little on the rough side to say, but doable for sure.
[name_u]August[/name_u], well, I won’t say I think it’s totally unisex these days, because it’s historically a male name, but definitely it feels appropriate on either gender. [name_u]March[/name_u], like [name_u]August[/name_u], seems like a gender-bender month name. I think [name_u]March[/name_u] also makes me think of [name_m]Little[/name_m] Women, and therefore girls, giving it a unisex vibe.
I have long loved [name_u]Ellis[/name_u] - girl or boy, really - and have recently become enamored with [name_u]Arlo[/name_u] (and [name_m]Nash[/name_m]!), so I’m glad to hear those you liked.
Also, for what it’s worth, off your middle name list, I think that [name_f]Esme[/name_f], [name_f]Camille[/name_f], [name_f]Leta[/name_f], and [name_f]Freya[/name_f] best capture the feel of [name_f]Aveline[/name_f]. I do find myself pulling for a longer middle name with many of the first names you’re considering, something like: [name_u]Bellamy[/name_u], [name_f]Coralie[/name_f], [name_f]Coraline[/name_f], [name_f]Delia[/name_f], [name_f]Estrella[/name_f], [name_f]Eulalie[/name_f], [name_f]Fiona[/name_f], [name_f]Genevieve[/name_f], [name_f]Guinevere[/name_f], [name_f]Julietta[/name_f], [name_f]Lilias[/name_f], [name_f]Leonie[/name_f], [name_f]Mirabeau[/name_f], [name_f]Noemi[/name_f], [name_f]Ophelie[/name_f], [name_f]Ophelia[/name_f], [name_f]Rosemarie[/name_f], [name_f]Rosetta[/name_f], [name_f]Tallulah[/name_f], or [name_f]Violet[/name_f].
[name_m]Cove[/name_m] [name_f]Aveline[/name_f] and …
[name_u]Arlo[/name_u] [name_u]Bellamy[/name_u], [name_u]Arlo[/name_u] [name_f]Coraline[/name_f], [name_u]Arlo[/name_u] [name_f]Genevieve[/name_f], [name_u]Arlo[/name_u] [name_f]Violet[/name_f]
[name_u]August[/name_u] [name_f]Eulalie[/name_f], [name_u]August[/name_u] [name_f]Fiona[/name_f], [name_u]August[/name_u] [name_f]Mirabeau[/name_f], [name_u]August[/name_u] [name_f]Noemi[/name_f], [name_u]August[/name_u] [name_f]Ophelie[/name_f]
[name_u]Avi[/name_u] [name_f]Coraline[/name_f], [name_u]Avi[/name_u] [name_f]Estrella[/name_f], [name_u]Avi[/name_u] [name_f]Guinevere[/name_f], [name_u]Avi[/name_u] [name_f]Julietta[/name_f], [name_u]Avi[/name_u] [name_f]Tallulah[/name_f]
[name_u]Ellis[/name_u] [name_f]Delia[/name_f], [name_u]Ellis[/name_u] [name_f]Fiona[/name_f], [name_u]Ellis[/name_u] [name_f]Mirabeau[/name_f], [name_u]Ellis[/name_u] [name_f]Rosemarie[/name_f]