Eh, TGL is worth something like 7000 gold here in this situation if we only attain first tier MA techs and then they zoom to Education. That is pretty darn good. We would just be backwards as all hell until we meet some people; we can rush curraghs though. It also might mean we cant switch to Feudalism for some time. We could switch to despo for a few turns though when our population is up so that isnt too bad and switch back to monarchy or hopefully republic.
From the random ideas dept, if we want to forget 100k, we could build TGL and turn on research once we find others and get Feud, do some research, and have a perfectly timed prebuild for Leos. Upgrade 125 warriors to gallic swords, and research to Navigation, and have at it.
I think we should just sit and wait and see what happens. Maybe we dont get Pyramids; we can keep our options open with the ToA build.