^^
T104 is my result for 7-GP. I haven't played further to 8-GP because it would be a very different path (i.e. Washington needs to pop 2 GPs).
NY: we can use it to pop the 2nd GS on T91, this means more food+hammers in Washington, and also more turns of scientist specialist which means better odds of a GS than a GE.
Luck is indeed very intense in this plan:
1-some games I get all spreads without even using the free missionary
Other games I get 1 or 2 spreads only.
2-This is something we can try to deal with by starting to run specialists earlier... less GPP but more scientists = better odds.
Best case scenario
We get 4 GS for bulbs (Machinery/Optics, Astro*2, Engineering).
We are able to trade for Alphabet, Sailing, Pottery, IW, Calendar, Aesthetics, Construction.
Free religion spreads.
All done on T103 (I don't know if it's possible, but I guess yes.)
Typical scenario
Trade for Alphabet, Iron Working
Religion spread in Washington, NY and 1 of the 3 GP farms => 1 missionary required
We get 1 GA instead of a GS... skip Engineering bulb (it sucks, but that's the better option imo).
All done on T104
Worst case scenario
No religion spreads. Whatsoever. (I think it's about 10% per city when they are close (function of distance) each turn, so this would be sooooo bad luck).
Can't trade for Alphabet... so no techs at all.
We get 3 GAs and 1 GE.
If this happens, we're more or less screwed
Backup plans
1-We can use 1GA+GE to trigger a new Golden Age and try to farm 1~2 extra GS to bulb Astro.
2-Depending on religion spread by T91, we grow cities further and go for the 8-gp approach instead.
3-We abandon the total war option (ugh..)