If you want some real terraforming power, then add a few cargo, a few cryo, and carry some industrial complexes. If you're doing it right, you should be able to move to a planet, set the construction down, and start building infrastructure or whatever even while still terraforming. If the gravity or temperature is too far outside the extreme for a 0.0 end, then you might enjoy the ability to build infrastructure to get things running more quickly.