Ok, I played and managed to supress my builder instincts, here's the turn log.
Pre-turn:
I MM a bit, especially the cities that can't grow anymore until they get aquaducts and turn off all gouverners. I'll supress my builder instinct and continue crancking samurai. All the AI seem to be three techs ahead, but my feeling is that it is actually worse, we just can't see. Only the Iroqs are trailing. The French have only education over us. Press enter.
IT - England demands TM and 45g, I cave, gritting my teeth. We'll meet again Lizzy...
130BC - turn 1:
MM some more
I can make a deal for edu cheap from Joan, but she's still at war with the Am's so I'll hold off for the moment.
IT - nada
110BC - turn 2:
Dark Humour worker -> catapult (defense for our frontline to be, samurai would take 35 turns

)
Osaka riots

Can trade England Dyes for Wines+WM+39g or Persia Dyes for Furs+WM+4gpt. Decide to go for the latter since England is cautious and will not make demands for 20 turns to come. Persia is annoyed and the deal is better. It turns him polite.
I fire Osaka's scientist.
IT - nada (Abe is moving annoying settler pair back and forth)
90BC - turn 3:
Osaka samurai -> worker
MM some more
Trade WMs
IT - nada
70BC - turn 4:
Kyoto samurai -> samurai (no, Space, no market remember

)
Sirp-Orange samurai -> samurai
Trade WMs, Iros have Theology now
IT - nada
50BC - turn 5:
Edo samurai -> samurai
Osaka worker -> settler
IT - Persia and France have peace, looks like Joan ceded Dallas
30BC - turn 6:
Engineering is in, start Invention still at 0%, I fire the scientist.
It is like I thought, Abe has invention too.
Trade Engineering with France for Education and 157g straight.
England and Persia have Astronomy and Banking, Abe, Ghandi and Joan lack these.
IT - London completes Sistine Chapel.
10BC - turn 7:
Satsuma samurai -> samurai
The Americans kno Astronomy and Banking too, India still lacks them. France is down to 1 city. 4 turns to go on the deal with America.
IT - Joan is destroyed
10AD - turn 8:
MM some more
IT - Iros demand education, I give in (we need some balance for England on that continent, I was actually thinking about gifting it anyway).
30AD - turn 9:
I move a samurai on our iron source, it should be next to undefeatable on the mountain.
There's a nice settler pair to attack in our jungle.
India has Astronomy too now.
IT - nada
50AD - turn 10:
Kyoto samurai -> samurai
Dark Blue samurai -> samurai
Osaka settler -> samurai
I move a samurai to Dark Humour to attack settler pair (later! still 1 turn to go...)
the save
Mad-bax I know the samurai are in good hands with you, go give 'm
edit: Guys, I didn't see your posts yet (too busy playing

)
@Earp: France is gone already, the deal is over next turn.
@Wanderer: Osaka is a real good factory, it built a sam, a worker and a settler within these turns. It is again busy on a sam now.