I think it will be a bit of a balancing act, to try to develop without hitting the milestones "too early", if you find yourself too far ahead, maybe go build some warehouses all over, get those timeless/ageless buildings online.
I'm fairly certain I'm going to select for Long ages, glad to see that as a feature as well.
I'm fairly certain I'm going to select for Long ages, glad to see that as a feature as well.