wow shilea, all good ideas. I love the way your are allowing this idea to evolve by leveraging the site. Great use of technology to move the idea forward.
It's going to come down to what direction you want to take your creation.
As an interested party, I'd be glad to help for items #3 or #4. That shouldn't take too much of my time.
Idea #4 seems to me to be a way to really tweak the site for whatever your next step is.
At this point in my career, for any serious amout of my time, I can participate as an investor or as a paid consultant for a coporate entity, whether for-porift or non-profit.
thanks for staying in touch,
jordon