My goal was to have all (almost) people living in GI.
My favor rating was a little slow to raise, I think I delayed a request and the boss was mad at me.
I applied forced walkers which helps in case of gatehouses not available.
Attached zip file has four saves as the city progresses.
----------------------
Version 2, I got all houses as Grand Insulae, ratings much larger and lower population. Dock very close to entry point and city on central plateau.