Congratulations! I know you must all be thrilled!
Of course if you are having the baby in September, the best September name (it has served my daughter, who was born September 30, 1979, well, lol) is Nancy! The name she chose for her daughter would go well with Rachel's name--our grandaughter is Hannah. Of course if you have a boy, either of these names could be a little embarrassing! But who am I to judge?