In my mind, it is smarter to use Advanced Start to create your capital, improve it, and buy settlers instead of building other cities, unless you really see good another spot for another city.
Point being that you just dont see enough to safely place your other cities, and buying visibility costs money -> Safer/Cheaper to buy settlers, and place the cities with the scouting information that they provide as they move to position after the game has begun.
There are exceptions as I said, if there are clear already visible position(s) for multiple cities, then I build multiple cities. But if I have to pay to get more visibility in order to do this, I choose not to build that city, and not to buy visibility, but buy settlers and scouts to fast check the area and expand.
Not sure if this is as good strategy as I think, but I prefer it.