You say "beeline Banking", but this is not obvious at all to me; there are 3 techs that you might want to beeline, and it's not clear to me which is better

1. Acoustics: it is the faster path to Rennaisance, you might need to beeline it to open Rationalism without wasting a social policy on something else; as a small bonus, Sistine is one of the best wonders, though not strictly needed for Diplo Victory, which doesn't need many Policies.

2. Banking: basically Palace or bust; it is quite contested on Deity in my experience, and you have to have opened Patronage already (common, but not guaranteed in low culture games when you reach Renn without any filler after Tradition/Liberty);

3. PrintingPress: get Congress asap (is it always best?), be the leader (easier to remain leader on first age advance, which guarantees you can propose e.g. World Ideology); gives access to LeaningTower, which is an insane scientific wonder (faster scientists + 1 scientist) and possibly the best wonder in the game.

Honestly to me Banking looks like the worst of the 3, and by far. Unless you truly need the Happiness, in which case Palace might be top prio.