The food requests were handled mainly by a small disconnected block of 3 small casas. They were later connected to the grand insulae block, via road thru a granary, so they could upgrade to small insulae and meet the 5000 population requirement.
City layout started initially with locating the 3 separate areas near the entry point and the native hut needed to start exports, namely the farm meadows for fruit and 2 of the spots for iron mines. A forced walker loop made it easier to provide them labor access from one housing area.
I didn’t go for palaces anymore as large villas were enough to meet the prosperity requirement. Also, there wasn’t enough space available with where I decided the put the patrician housing.