Even if the city actually reaches that size, getting all of them to follow SA will be quite a challenge. We've been working on Springdale (currently the largest center of the faith) for years, and haven't ever managed to get 100% conversion . . . the city is currently about 75k people, with 4 shrines and a level 11 temple (which can provide for 71k followers), and despite pretty constant preaching, there's been very little progress for a few months. Maybe 3k in three months or so. In the last week it's been staying about at 52k, every time I get more it seems to go back down the next day.
