Now to give some info you need to play around with the city.
1) patrician block is stable but if some of those palaces devolve you will need a lot of quick micromanagement as they will prbly loose water accsess and you might have to bulldoze some oracles and rebuild them in order to get palaces to their former glory (devolution hopefully will never happen)
2) military - unfortunatly 1 spot where enemy comes in is right in the city at the only wall on the map. With a bit of luck you can kill them before they destroy the reservoir. Oh the other spot is right where the forts are so you have to move your legions back quickly or they be slaughtered. Hint for fighting - use horse as a buffer while javelin rain death. Also notice there is no barracks or military academy in the city you might want to rebuild those as i had a fight recently and legions have suffered some.
Have fun, hope to see some suggestions on getting workers, Sammy