Well, if you combine these advances even with basic artificial habitat building at reasonable scale(Oneil cylinders, world houses, covered craters, cavern citie

Well, if you combine these advances even with basic artificial habitat building at reasonable scale(Oneil cylinders, world houses, covered craters, cavern cities, asteroid habitats, etc.) you should be able to house all these people quite easily. If all these long living people dont have to much new children (and might not be able to ? eq. if fully digitized or with body fully replaced with mechanical parts), it might be even easier.