Early Iron Age now? Well, I hadn’t really thought about that, either. You might want to alter the “to hit” scores a bit, depending on what you think the troop classifications I’ve got map on to those you need. I don’t have a classification for warband/medium troops with javelins, but it should be straight forward enough to graft the LI missile rules on to them. My aim was to write very specific rules so I could keep it simple, and as I’ve said elsewhere they may work for some other periods, but come with no warranty (same for my suggestions in this post https://wargaming4grownups.blogspot.com/2019/11/to-ur-elsewhere.html ) as I simply haven’t done even a single game playtesting. I’m nervous about anyone thinking that they can use these straight for something they weren’t intended for, then start a thread that goes “These are rubbish because my Phillistine Goliath figure isn’t covered”, but at the same time excited by the possibilities other people are seeing.