Middle name advice

When we got married, my maiden last name became my middle name (it is a womans name actually so it flows well as a middle name). We decided to do the same for my first daughter (so her and I have the same middle and last name).
Am I crazy to want to do it again for my second daughter or should we go with something different? I guess Ive never heard of siblings (and their mom) who have the same middle name, so wasnt sure. Thoughts?