I think we should be working out how to modify/terraform the atmosphere of Venus so we can live on the surface. At the rate we're going, we're going to need that tech on Earth. So once it's perfected here, we can then get our sister planet back to functional too
Venus needs a lot of work that Mars doesn’t. I think the main problem is the rotation period. The amount of energy required to speed up the day of planet is unthinkable.
I came away thinking that it was impractical even in the long term after watching this:
Beyond that, I think humans may eventually colonize the moon, Mars, and the clouds of Venus, but I highly doubt we will make it out of the Solar System before our species dies out.
Edit: I hope to be wrong.