Venus atmosphere is (roughly) habitable in terms of temperature and pressure at 55km up; seems like the elemental shortage there would be hydrogen and phosphorous; but that might be a better trade off than trying to farm the moon...
Venus space stations gaining traction as a "second front" in exploration and colonization is something I am really pleased to see. It opens the door of planetary formation research. Long term lower atmospheric and surface habitation is the ultimate prize and perhaps the toughest engineering challenge at this moment ;)
Experimental Study of Structural Materials for Prolonged Venus Surface Exploration Missions
