Best javelin faction
I take it it's Ithaca/Odysseus, right? They get those nasty tier 4 ones in their roster, so they are not locked to only recruiting them via landmark - I think that's how the other Aegean factions can get them.
Now, how to maximize the damage you can do with them. I am thinking of joining the Egyptian court (since I don't think you start as part of the Aegean one) and going Akenathen by settling one sacred Egyptian land. One God to merge is clearly Zeus, who boosts javelins a lot. What would be the best 2nd God to merge? I'm thinking one that increases ammo for all ranged infantry?