Is kind of tough to assure food, jobs and all stuff for 4000 people. As you see,trying to have jobs for all end in supra production . All 12 wharehouses are full of wool, weapons and so on .
If you succeed in having 2 or 3 cohorts trained you dont have to worry about raids. The problem is they attack from all corners and you must have cohorts prepared to defend the city. The 30 for prosperity is kind of easy . I need only 2 small Estates to balance my 22 large Insulae and my 8 large domus.
As you can see my city is a little messy because
1. I am not so good in designing cities :)))
2. My initial planes was not enough to assure place for all plebs and eq. So I was forced to modify the walls.
The terrain is kind of difficult because you have only one small water eye in a NV corner so you have to establish the city around there.
Summarizing was a nice challenge.