Yes, I agree that settling every seafood as fast as you can is in general a good play! GLH is important, Colossus is cheap and decent though it goes obsolete very early.I always like to supplement my economy with coastal cities, especially when financial. So long as there is a food tile, I'll even settle in ice (albeit last lol) so that I can get the financial income bonus for working the water tiles. That's also why I really like Great Lighthouse and Colossus a lot.
Well, but you don't need to spend a GE to get a wonder. Forests are for that.I feel like the payback you get for rush-building certain wonders is usually better than Golden Ages long-term, depending on the wonder, unless you have a big empire that can take advantage of all the production. Then I'll usually Golden Age. If I'm boxed-in, I find myself more likely to strategically rush-build wonders that I otherwise would be beaten to building because my land holdings are so small or in not-so-great areas. Can you further explain the payback of a Golden Age overall?
The payback of golden age comes from having several cities run as many specialists as possible under caste+paci. Gaining something like 5000



In general, if your land holdings are small, you should attack at construction.
Close to never. If very early, probably thanks to PHI.One thing I never do is settle my GP as specialists. Do you? If so, when and why?