What about Diogenes? That's me!
Expensive and could be destroyed with a minimal amount of fuckery. You know THEY would love to bring it down.
How about a rotovator? It is pretty much a cross between a space elevator and a trebuchet. It's much smaller. Doesn't require super advanced materials. Its orbital energy can be recharged by periodically catching and de-orbiting asteroid chunks, which could then be processed for minerals.
https:// en.wikipedia.org/wiki/Momentum_exchange_tether
One way or another, it is imperative that we get off this rock before the satanists bifrucate the species into 160 IQ masters and 80 IQ slaves. If they pull that off, there will be no threat of competition from a human space civilization, and Earth will be a hellish Communist prison planet forever. There are probably a million of these occult motherfuckers worldwide and we will never get rid of them all, so we need a plan B.