I like the save stack, I think you're right that we need the fourth city before the fifth worker, the worker could help getting cottages up and running quicker, but city 4 raises the happy cap and builds the snowball.
Also whipping City 2 at size 2 on t46 seemed wrong
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Also whipping City 2 at size 2 on t46 seemed wrong

Completed: RB Demogame - Gillette, PBEM46, Pitboss 13, Pitboss 18, Pitboss 30, Pitboss 31, Pitboss 38, Pitboss 42, Pitboss 46, Pitboss 52 (Pindicator's game), Pitboss 57
In progress: Rimworld
In progress: Rimworld