What do you think?
What software should I pick?
I am thinking about soju with their own webchat client.
I believe there are already free offerings out there, which can be hard to compete with.
If you're trying to go free but with paid features, that's where you can capture users, perhaps even by giving the free users a taste of the premium features.
I don't know much about the state of IRC bouncer software today, but I'm sure there are some good ones out there.