The only 2 I like are Jett and Cale.. If our bub is a boy he will be Jett Anthony ... Cale doesn't really go with your middle names IMO. Zion goes ok, but I'm not keen on the name. How is it pronounced Z-eye-on or Zee-on? Rex also goes, but again not keen on the name. GL with your choice.. I actually think Jett is getting pretty common. Must be because it's such a cool name!

ETA: I like Naenaes suggestion of Zander.. It goes nicely with your middle names too