Well, I decided on Compass, since it should have decent trade value and it probably won't be prioritized by the AI.
Here were our choices, note that actually research time is about 1.6 X listed, since we're running a cash deficit.
I didn't build any swords or axes, I only whipped out two Quechas to deal with Barb archers entering our territory. Otherwise we're finishing Granaries for the most part.
My number one priority was hooking up Russia to our capital. The barb city on the river cut out our trade routes. One road built just outside the barb city did the trick by connecting to the river just upstream of the barb city. This meant 2 extra happy, and much health, and iron in Cuzco.
After Alphabet was done, the only thing we could get for it was Mathematics. We could also do an Iron Working for Polytheism swap, but that didn't seem worthwhile. I did trade Priesthood and Meditation to Vicky for Masonry, hoping that Construction would open up next turn, but no one has that yet either. 11 turns later, at the end of my set, we're still in the same situation. No one else has Alphabet, and the only techs they're willing to trade are Math and Polytheism, so I continued to hold Alphabet as a monopoly, even though it is a depreciating asset.
I also used the whip once in Moscow to get the borders popped sooner. Getting the Flood Plains Pigs working will mean that we quickly get the gold and 3 gem mines working too.
Here's Russia in 400 BC:
A few points to note:
1. Novgorod will expand in two turns. The jungle over the wheat will be cleared by then and the wheat and cows are already roaded. There's a worker there for each of them, but you may want to consider taking the worker that just finished clearing the forest over the cows and moving him to build a connector road to the wheat tile. Once that road is done, he can help build the farm, then the two workers can also combine on the pasture without losing any turns since everything will be roaded.
2. Hatty just put a city down in the last turn or two 3 tiles from Moscow. Since she's creative we're going to lose at least one gem until we take her out.
3. Rice on an ice hill sucks.
4. I've been chopping jungles around Cuzco to help its health.
http://forums.civfanatics.com/uploads/56599/s04_400bc.Civ4SavedGame
I also changed the save game file name to s04 400 BC to avoid being banned by the board gremlins. Why take the chance?