I love [name_u]Meredith[/name_u]. It would’ve been a contender on my list, but H has an ex-gf [name_u]Meredith[/name_u]. 
I love it with the nn [name_f]Edie[/name_f], but Mer/[name_f]Meri[/name_f] is cute, too. Our baby girl is also due in 6 weeks, and we were also looking for something strong, not too frilly, but not unisex. We settled on [name_f]Iris[/name_f], but some of my other favorites were:
[name_f]Edith[/name_f] (nn [name_f]Edie[/name_f])
[name_f]Magnolia[/name_f] (nn [name_f]Maggie[/name_f])
[name_f]Jane[/name_f] (nn Jincey)
[name_f]Violet[/name_f] (nn [name_f]Vi[/name_f])
[name_f]Genevieve[/name_f] (nn [name_f]Evie[/name_f] or [name_f]Viv[/name_f])
[name_f]Amelia[/name_f]
[name_f]Fiona[/name_f]
[name_f]Olive[/name_f] (nn [name_f]Olli[/name_f])