So Astrape has power, but limited oxygen. That is fine.
What isn't fine is, that moving the rover into the civilian bay, you can't sit in your rover to passively restore your personal air supply (if you have pressure regulator of course). So you have to remove the rover from the vehicle, enter the rover and do a wait action in there.
Otherwise, you will likely run out of air before other resources, as it takes forever to refill air cannisters.