I like the red circled site too, yes, and with an AMAZON workboat coming up it should be all but perfect. I still might say to go for the copper city fourth (we need to pull up another name - how about *Quantum*, which got bumped off of our list earlier but was still a good fit.) But I could go with Singularity as the fourth city too, if we can get the workers around to the wheat farms/iron/spices.
For Resonance specifically - I would favor it as a hammer city too, we can probably farm a couple of the grasslands if we really want, to ensure we can work all the mines we might want in the future. It also works given that some on the team wanted strong production/militarily defensible sites on the mainland.
As for overall economy - well, I think really we'll be on a hybrid and taking what we can get this game. Overall everything is extremely heavy on water tiles but we're fortunate with financial there. We do need to get some scientists for academies/bulbs eventually but it's still really early. Anyway, if we do have some mostly flat, inland cities I too would probably cottage them over eventually, but as it stands everything on the coast is going to end up "mixed" in the end. I don't see us investing in particular wonders/unique strategies like espionage though, just to be clear.
Also, it is important to acknowledge our tech alliance situation - given that we have no specific goals for teching uber-fast, not trying to win a fastest victory or something, we do however have a great need to always stay strong in military and production, so I'm happy to work up good production where we can get it.