Inside the habitat

[ProxCenBound]

I commented on this a bit in the Cislunar Alliance thread, but since we have Stanford Tori in 140ish AT, I don't think it would take 260 years to get up to O'Neill size. And we have a very significant orbital population by 560, so there'd be demand growing for a while for scaled-up habs. I could see the first O'Neill Cylinders being 150ish years after the first Stanford Tori, maybe even less.

Just my two cents and I'm sure we'll arrive at a consensus soon.

EDIT: Likely the earliest cylinder habs were smaller than ones that came later, and especially didn't have intrahabitats.