Hi, Mark!
This popular "son cubano" has been translated several times, in several versions, You can check and compare. In the meantime I want to tell you that all those Cuban expressions refer to a girl:
1. guachinanga = gracious/flirtatious/deceiving, or anything like that.
2. Chinita = It is an afectionate way to call a girl. You can say, "darling, sweetheart...", or leave it as is.
Best regards
His brother's name was Jubal; he was the father of all
who play stringed instruments and pipes. (Genesis 4:21)