Hi John, there are tons of places to visit. There are millions of people to talk to. There are many places to share. I guess it depends on how you want to do it and what you want to see. When you say "share", do you mean something like a speaking tour for money or just hanging and talking to fellow humans?
If you want similar conditions to Bendigo, I'm guessing the southwest US would be most applicable. If you want to see something totally different, pick a different part of the country.
If you are aiming for a summer visit, there's stuff to see everywhere. If you'd come in January, the farm tour options may be a bit more limited to the southern fringe of the country.
Finding places to visit will take some detective work. Maybe the fine folks at Permies would be a place to start. List a rough itinerary and see who'd want you to visit (feel free to swing by my homestead). If you want official
permaculture farms, the search will be a bit harder.
Justin Rhodes did a stellar trip across all 50 states visiting a bunch of
permaculture sites. Blasting through his youtube journey could be a way to find some stops.
If you want to see the sights while you're here, book plenty of time. The national parks are usually a great place to start for natural beauty. The big cities have some of that "culture" stuff that some people like. Pacifist, left-winger types may tend to be a bit more concentrated on the Pacific coast but they have been documented in every state if you know where to look. Pacifist hot rod motorcycle racers are a bit harder to find