Hi, I am new to this message board stuff.
I think it's great. Sylvia is a classic name that fits in well with the Evelyn's, Olivia's and Vivians. I'm surprised it has not become more popular.
Congrats on choosing 2 lovely names for your girls.
I think Sylvia nn Sylvie is great. It would be a top contender on our list if dh liked it. I'd say stick with it. :)
I don't know how far along U R. I think Julia is a very pretty name, it sounds powerful and sweet to me,