Question about baby names?

so.... my boyfriend and i are going to have a baby. not for awhile though. (im only 5 weeks) and we had always talked about what would happen if we had a kid ect. he and i decided that we would name our first boy julius joseph niles because we love the first name and his father middle name in joseph and my boyfriends is niles. we never really talked about girl names. so i thought just recently about naming her cecilia after my great grand mother cecile, and her middle name would be alexis lynn, from my mother middle name and all of his sisters middles names are lynn. and he doesnt like the name cecilia!!! even though he really picked out julius and he told me if it was a girl i could name her if he agreed! should i push the name of find a new one? thank you!!