Here, all 3 cities are on standard grass, very few BG's around. I'll take advantage of every plain tile I can find since they are more easily worked than grasses - and so far there are very very few bgs among them.
The map is small, so I doubt that even a very stubborn man will find a lot of use to researching to cavalry. Researching to knights might be worth it, but then I'll take 2 legions anyways. I've said it and I'll repeat my game plan: hordes. Masses. Legions. I'll get monarchy to be able to cash-rush, and I'll cash rush everything from there. Cities need to reach 6, 8 or 10 spt for legions. 10 spt cities will short-rush legions for one turn less, 5 spt towns for 3 turns. A few core cities will keep making settlers and workers all along the game and these new cities will keep making legions. I'm seriously considering a more ICS type of layout, outside the core. Eventually this can become a problem if they out-tech me enough, but I plan on making my numbers decisive.
If the tech tree gets raced I'll do what I must to hinder them. There is only so much you can do against pillage by stacks of 3 defense units.
I need to road my way to an opponent to send the hurt where it belongs. And then I'll play safe, stack up large numbers of troops and take advantage of my military trait.