[dogscoff]

Yeah, I've only got 90 million on there at the moment, but my migration program is speeding up considerably. I have two pop-transport worldships (19million capacity each) and a number of smaller ships on repeat orders, with plenty more in build. I've re-drawn the galaxy map so it is now only 6 movement points from my homeworld to the rinngworld (and I'll soon be reducing the distance from my other oxy-breather homeworlds as well) so I reckon I can have at the very least 2000m on it inside of a hundred turns. I'll be aiming for at least double that.

I'm on turn ~750 now, btw.

Oh, and worldships work very nicely for stellar manip in proportions: You can put one plating and one cabling component on a worldship (with the necessary C&C) and a SY base will construct it in less than 2 years. You can also build it mobile, if your homeworld is nearby. You'll need 5 of these worldships and a ringworld placement generator (on a starbase- 2.7 years, YMMV) for a ringworld. Maybe they need to be more expensive in proportions. Does 2 years seem long enough to build all that?