Preturn analysis: MM for 1g more. Other than that, nothing much. Our little empire is pretty optimized. A pity we have to have our GA in despotism, but its probably best to wait with the revolt until the GL is finished.
Noting that we have a iron source nearby, the other civs might be willing to pay a lot for that.

The Incense too.
Question: does a volcano destroy roads and colonies?
If so, then it could be dangerous to sell that iron and we would need to build redundant roads to keep our be sure to keep our incense connected.
IBT - a dromon is lost in treachorous waters.
(1) 30BC - exploring. Setting the slaves to mine the mountain.
IBT - The Mayas complain about our curragh within their borders, well...
(2) 10BC - lower the research to 80%, we will get Math next turn, hopefully we'll be first to it.
IBT - we get mathematics, I chose Construction as our next tech since that will make it possible to build both a colloseum and The Great Wall. Culture, gotta have culture...
(3) 10AD - by using mysterious sea-squares in the middle of the ocean as jumpstations, our scouting ships find new landmasses in two parts of the world. Constantinople has grown to size 9, The GL will be finished in 10 at the current rate. Construction in 17 turns, but at a loss of 3gpt, maybe we can sell some old tech for cash to fix that.
(4) 30AD - The new landmasses was really tiny, uninhabited islands.
IBT - our Golden Age ends.
(5) 50AD - MM Constantinople to max production, but now the GL will be finished in 12 turns. Construction in 18.
(6) 70AD - Exploring.
(7) 90AD - Exploring.
IBT - The English are building the SoZ.
(8) 110AD - Found Iroquis!
They are polite, and they're ahead of us in tech! They have Currency anc Construction but they do not have Philosophy, Literature or Polytheism. Of course they will only agree to a
three-for-one and I really do not feel comfortable about giving them Literatur when we still have 9 turns left for the Library. I wait.
IBT - A Spanish galley appear out of the mist and lands a settler/sperman pair exactly where we found the Iroquis!
(9) 130AD - Our dromon head for the mist where the spanish galley came from, to find India! They are behind us in tech. Spain has Currency and Construction and they are willing to sell it for just Monarchy! Since we will get a late start on the Hanging Gardens anyway (and the Mayans are already building it) I accept the deal. We start reserching Code of Laws (10 turns).
(10) 150AD - Mine finished, but it won't get us the Great Library any faster. Since all workable squares are improved, we send the workers to build redundant roads around our colony.
IBT - The Incas start The Hanging Gardens.
(11) 170AD - A dromon spot a new border, we'll try to reach it next turn.
IBT - The Spanish are building The Hanging Gardens. we're running low on cash.
(12) 190AD - Hi Korea!
They are behind us in tech, that means we're ahead of everybody we've met.
IBT - The Indians are building The Hanging Gardens.
(13) 210AD - We sell Mathematics to Mayas for 86g so we can continue researching a -3gpt.
(14) 230AD - Our dromon spot another border.
IBT - Zulu demand Mathematics, we give him that. Actually I'm kinda surprised how little harrasment we've had to go trough so far. Normally in an OCC, you will never be able to be 4-5 techs ahead of anybody since they will extort you every other turn. I think that it may be very significant that we're on our own island - they have no knowledge of our military.
(15) 250AD - No, the border we saw was just the Spanish.
It's really not easy to show a map that isn't just a lot of black with some trails from our scouting ships on it. The minimap at least gives some idea of what the world looks like:
Summary: The Great Library will be finished in 2 turns, but we won't get much from it since we're ahead of
everybody with 1-4 techs. Code of Laws in 4 turns and then we'll enter the Middle Ages, getting our free tech. I would also suggest to switch to Monarchy when the GL is finished.
The save