My Spaced Out Minibase on default Standard difficulty at about cycle 200. Currently running critically low on minerals but am planning on setting up a claymator to get ceramic and replace ladders and tiles with plastic as my Dreckos are up and running reasonably well.
I just finished Super Sustainable (yes I am doing achievements, but missed Carnivore by ~100kCal) so I will probably start playing with oil soon. A nearby planetoid has two oil wells and a volcano, and there is another oil well buried in the 1300C rock at the bottom of the base.