Okay, I tried another run at the Oracle for Metalcasting & early forge, followed by Great Lighthouse & Colossus. I managed to get a worker, 2 settlers, 2 workboats (one for fish and one for scouting), and 2 warriors built in the capital also.
Relevant dates:
2240 BC - First settler built (could have definitely been sped up, I grew to max size first while building workboats & warriors)
1880 BC - Oracle built, Metalcasting taken
1720 BC - Second settler built
1040 BC - Great Lighthouse built
925 BC - First great person born (either Prophet, Engineer, or Merchant)
775 BC - Colossus built
I went for Fishing->AH, hooking up the gold earlier. I don't know if that was wise. I got Bronzeworking early because you need it to mine the hills (they're all forested.)
One of the things about getting an early forge is that it lets you run an Engineer specialist (food is plentiful.) I forgot to look at the numbers, but even a 20% chance of an engineer in the year 925 BC is great - free Pyramids

It probably would be possible to run one early than I did. Code of Laws was coming in at 600 BC, which has a good shot at founding Confucianism.
Edit: I just realized, if you hire an engineer as soon as you build a forge after getting the Oracle, you have almost a 50% chance of a GE for free Pyramids!
The next GP was coming in around 300 BC. If it's a merchant, it could discover Civil Service at the point assuming I went ahead and researched Monarchy after CoL.
Note that I didn't actually settle any more cities, so that slowed my research down (Great Lighthouse + 2 cities = minimum of 8 extra commerce from not having any settled at all, minus upkeep costs.)
Here's a look at the (abridged) spoiler log if anyone is curious or has some advice for improvements... I'm still not settled on the tech path, how much to grow, etc.