My bet is that the water NW is a small lake, a good place to throw the weapons of our defeated enemies.
I think I'll move the worker NE at the start. (TedJackson: Thanks for the illustration of exactly how much new info that will provide!) Then if there's bonus food anywhere nearby I'll move toward it. If there isn't any, I'm tempted to move the settler SW, hunting in that direction for food. More likely I'll just settle at the start position - partly it depends on where we are in the world on the minimap.
If there's no bonus food then a granary will be a high priority for me. But I don't think I'll research Pottery - I think there's a reasonable chance of meeting someone and trading for it fairly early.
I think the questions of tech pace and the Gallic Swordsman are intertwined:
As Shillen has pointed out, it is likely that we have a range of viable research strategies. At Monarch level, with the large map research rate, and with 10 rivals, I think we'll be able to get a fast tech pace if we want it - we can lead in research and with heavy trading get some help from the AIs. Or we can get a much slower tech pace by limiting trading activity and doing little or no research.
There may or may not be a bit of a tech rush at the start. Depends on how quickly the AIs contact each other. If some expansionist Civs make early contact then they might hurry down the first part of the tech tree from huts. But after the exploration phase we can probably control the tech pace reasonably well.
Taking an aggressive approach to tech will probably render the Gallic Swordsman less useful because:
1) If researching flat out we'll be short of cash, there won't be much money available for the expensive Warrior -> Gallic Swordsman upgrades.
2) They'll be obsolete relatively quickly. I think these units will rock in Ancient Times. They're expensive (overpriced I think) but they sure are strong and fast. I've tested an important characteristic - they do get a "retreat roll" which adds to their value.
I plan to follow a slow tech approach. (There goes my QSC score again

) Build up cash for upgrades and try to extend the useful life of the Gallic Swordsman. I'll probably keep research at zero for a long time, will hope to trade contacts and maps for tech. If I happen to get Alphabet very early (from a hut or trade) then I'll hedge my bet by researching Writing at the 40 turn rate.