Son or Daughter?

We lost my dad in 2014, and his name was Joseph. He always wanted a little girl (he is technically my step dad) and was excited to think about the day I would get married and have my own little girl (hopefully). Anyway, Hubby and I were tossing around the idea of naming our little girl something with the nickname "Jo" (if we have one) in honor of my dad, because he always wanted a baby girl.... or doing the typical thing and giving our son the name Joseph (if we have one), to name him after my Dad.... What do y'all think? **Note: We do not have any children yet**