Food for thought after awhile wood and iron sell about the same price. So I build all my cities with saw because sawmill require less population then ironmill = less cottage = more barracks. I keep 5 L9 cottage and 39 L9 sawmill you will get 5000 population with 0% tax which it enough to work with especially when you keep up with que. Never need to mess with the tax and use comfort. But is not a lazy man way to go but if you can log on more then 4 time a days you should be golden. I try to build 3 cities per group so only 1 of the 2 have market. Got so much resources my 10th city was a all barracks city (26), 2 cottage, and 0 production. Total barracks in 10 cities = 201.