Thanks to a nice CFC tip, I tried a different strategy on Emporer level using Japan.
Build order:
Warrior, Warrior, Settler, Barracks, Archer*5
Second town:
Warrior, Spearmen, Temple, Spearmen
Research: Warrior Code (traded for Bronze Working)
I took those 5 archers and spearman to my neighbour and took 2 towns. My attack stalled when I reached their capital (it was well defended). So, I sued for peace and got 3 techs for it.
I kept pumping out archers and sent 8 next time with a couple spearmen. I took 1 more town and then their capital and sued for peace again (their bowmen were starting to cut down my archers), netting another 3 techs. I even got the Oracle this way. Mopping up their cities later was merely academic.
If you want to use Archers, it must be right away. I used to wait for horsemen to make my early attack and build many settlers. However, the AI was always almost at Pikemen before I had a sizeable army. Using the archers, the AI makes the cities for you and all you have to do is conquer.