The plan is to keep it simple, the capital builds 4 turn settlers, the city SW builds 2 turn workers and the city SE builds 2 turn warriors with a worker every now and again to keep the pop low. This should allow for a very rapid growth rate.
Then once all the main cities are built the capital will start building 2 turn workers as well to work towards a big worker add wave just before switching to Republic.
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I later became a bit crazy about the number of workers and got additional cities to build workers too, I had about 25 by 1500bc but it seems to be paying off.