Another option is Nationalism for drafting.
As I recall, Bibracte was short a bit of OF after U.N. to complete CR in 2 turns. I''ll have a quick look and see if it makes sense to try and build it somewhere.
EDIT: the cheapest location to build CR is Thebes, it would be the equivalent cost of 815 gold (compared to 962g in Bibracte).
We can also consider building Hollywood, another 1,000H.
It's a 3t build in Bibracte so we'd lose 962g, but scientists are worth 11.1 beakers/turn, so ~100 more citizen turns would pay it off.
33 more happy citizens per turn? This turn, we'd get 7 more due to Hollywood (accounting for colony which can be liberated). Unless QSH gets into Emancipation as well, I don't expect it to pay off, especially since I'll just starve these angry citizens anyway...
I'll skip Hollywood but re-evaluate CR next turn. Given AI growth, we probably don't need to starve too much.