OP: I like the chat party idea a lot, actually. I broke them off into prompt posts sections. I think I may just have free for alls on each section until they are filled. That way the loading problem isn't a problem and chat parties can still be a thing.

I still wouldn't want to leave editing open to any one with the link I don't think :/....
I would be much more comfortable sending it over email. Especially since then I can explain to people a bit how it work and made sure that no one didn't want to hoped on with their email that's they're real name or something.

It's a concern I'm personally very paranoid about.