First things first, I used forced walking
technique, because I really think it gives you opportunity to build good looking city with layout that you desire, without knowing the whole "random walking" Bible. I used Brugle forced walking market traders using 3 markets attached to gatehouse, so they keep the same distance all the time (Still, there is devolution of houses, which makes me sad).
The city is illiterate, because, you know, workers, gotta keep the plebs in agriculture, no time for culture.