
There are a ton of good attack buildings and sets you can get in there and you are doing yourself a big disservice by not jumping to EMA and gaining access to it. The antiques dealer is perhaps one of the most underrated aspects of the game. Zen Zone - keep, the spring event will likely allow you to build those sets and they are decent for attack gain.

If you do have the main reward building at level 9, work on another settlement like aztecs or egypt for their attack buildings Only work on a second one if you don't have the Ygdrassil at level 9. Greater rune stone - place it in city.Sacred skywatch - if you have an abundance of space place them but if you're already tight on space sell them.Gate of the Sun God - Same as above for face of the ancient.Face of the ancient - place the level twos in your city and don't sell the level ones (keep in inventory until you get another upgrade from GE).Road to victory - place them all in your city.

Here's my take on all your buildings if you want to maximize your fighting ability:
