Sounds nice but is rather military. This may not matter, of course. Lysander was a Greek hero (Spartan admiral en.wikipedia.org/wiki/Lysander), and since then his name has become a by-word for military toughness. There's the very, very famous song 'The British Grenadiers' : "Some talk of Alexander and some Hercules/And Hector and Lysander, and such great names as these...." en.wikipedia.org/wiki/The_British_Grenadiers and also the World War II 'Lysander' spotter-plane and bomber. Etc etc
This is personal, but I really, really, really dislike 'Xander'.