Cross-platform announcements via Hootsuite et al. Get it outside the Permie community. Identify a handful of culture's hot-button behemoths who would be likely to support it or be against it. The more quixotic the combos the better. Trump, Duchess of Cambridge, Obama, Bieber, Ariana Grande--whoever) Find contact info for their managers/agents/handlers. Send them a well-crafted email/snail mail/whatever media succinct package outlining the project. Also target a handful of high-profile "Greenies" who are likely to support it and give same pitch to them (Eliot Coleman, Nigella Lawson, Monty Don, Leo Di, Joel Salatin, etc.)
Most of them will not support it or not respond. But then you can lead your posts/Igrams/Youtube segment/boosted Fbooks, etc. by shouting "Taylor Swift, Donald Trump and Shark Tank's Kevin O'Leary DID NOT support this world-changing pitch. But Chris Hemsworth (or insert name of surprise high-profile supporter), Eliot Coleman, and Joel Salatin love it. You decide for yourself--here's what it is...."
The high profile names should garner some traction and fringe audiences will hopefully be piqued by the few but excellent images you include with many, many hashtags & contact info.
Maybe even consider paying someone a small sum who does this stuff for a living... .
Failing that, there's always Youtoobs of scantily clad people with bizarre animal headdresses picking and eating greens while wallowing in a Mike Oehler greenhouse!