First Private Mission to Venus

E.g. https://en.wikipedia.org/wiki/High_Altitude_Venus_Operationa...

If those pictures look familiar, it's likely because you grew up in the 70s and read that book, then forgot about it for the next 35 years.

It is possible to build cloud cities on Venus at 50km altitude. The question is: why? What are you going to do there exactly? There's no economic incentive at all, since you can't mine the surface for anything valuable. Who's going to pay for some people to live in a floating colony so far away, one that's completely reliant on resources from Earth to sustain it? At least with Mars, it's somewhat plausible (though not really) to build a mostly self-sustaining colony, and there might (probably not) be some resources worth mining and sending back to Earth.

Personally, I think the idea of terraforming planets in this system is just silly and a waste of time to even think about. If you want resources, go to the Moon, and work on capturing and mining asteroids. If you want to make places for people to live that aren't so far away and don't have so many challenges, just build O'neill cylinders. You can keep them close to Earth for easy transit, and build them to precisely replicate Earth-normal habitats unlike terraforming projects. O'neill cylinders may seem like unrealistic sci-fi tech, but they're far more realistic and doable than these terraforming projects.

The only place terraforming really makes sense if where there's a planet with similar conditions to Earth: similar mass, day/night cycle, temperature, etc. Such a planet doesn't exist in this system. It might exist in another system, but just traveling to another star system is probably harder than building an O'neill cylinder.

The other thing that might make sense for a habitat is hollowing out a small asteroid and then spinning it for spin-gravity, as was depicted in The Expanse (with Eros).

Demonstrating this sort of capability would probably be great marketing.