You know what Jen, Marco didn't like any of the names we had picked out either, mind you they were all boys, but still...I told him that if we had a boy, his name was going to be Ethan and it would just have to grow on him. And since we didn't really have any girls names picked out, it was a surprise for everyone. Oh yah and by the way....Sydney was definitely going to be a boy too...just so ya' know.

My suggestion would be, this is what we decided to do, is to compile a list of the ones you like and the ones he likes (Marco liked Brianne

) and then when the time comes, hold your precious baby and go through that list again. You will find the perfect name for your baby, just by looking at him/her. Even names that you never considered may be a possibility, because only you will know which name your baby looks like.
Okay, now back to the suggestions...if Sydney, Rylee and Avery are out of the question (which I am not in favor of, LOL J/K) then how about Abigail/Abby, Arianna (I love this name), Livia, Isabelle/Bella, Eden, Emily/Emelie....and I do like Gabrielle/Gabby and Maci, those are nice names.