Kirk,
The crowd funding is a great idea.
While Kickstarter.com certainly has the popularity, something on wethetrees.com might get to the right audience.
Paul,
As someone who has post-funded your podcasts, I'd certainly love to have the option to pre-fund some awesome ones. (And If you get enough money, could you get some good lapel mics? Your current mics kinda sound like crap

)
I'd be happy to give you $5 for a good 2 hour discussion with some innovators and leaders in permaculture. Probably many times over! I'd bet there are others out there that would to, but I'm not a betting man.
Thanks,
-Ryan