First of all, I am pretty sure I won´t play such a mirror map again, it seems rather boring compared to other maps.
All in all,
My first plan it put down more cities then my opponents, as I want to take advantage of my industrial city state to the fullest.
Second of all, 2 turns from now, exploration should be impossible until ships for Hongkong, in contrast I try to sneak in my scout to Germany´s citystate. Sulllas one I won´t be able to explore I fear. It is a religious one, so no issues there. (Judging from the victory screen information and his early Lady of the Reeds.
Thirdly, I want to push for a quick city in the center support by a rushed city wall, which will be my pet project.
Also from my experience in SP any District which is not com/ind is pretty much useless and with Hongkong around my priority will be industrial first, everywhere except Rome which might go commercial first. There is no upside in delaying Medieval in MP, except for citystates quest and the only one crucial is the cultural (build a spearman).
In my opinion I will not be able to win a war on equal footiing against a veteran like Sullla or the Aztecs, so I will bunker up and wait for a good time to strike.