Financing / Crowdfunding : Precommitment by Barry Thornburg

Here's how I'm going about my first film and my first crowdfunding campaign... Here's the plan: I'm making a verite/observational/ethnographic doc about a foster care age out. I plan to market this as a training/educational film. My primary target audience is child welfare organizations/professionals and my secondary audience is child welfare nonprofessionals such as foster parents, child welfare advocates, etc. I will crowdfund the production costs, then write grants for post production/finishing funds. In my crowdfunding campaign, I plan to precommit contributions from people and organizations within my network so that I have at least 20-30% (if not more) of my overall funding goal guaranteed. The idea is that when I launch the campaign I hit the ground running and I can use this initial momentum to encourage enthusiasm and, hopefully, publicity around my campaign (there's nothing more depressing for potential backers than to see a stagnant Kickstarter begging for money, right?). After launch, and while this first initial wave of contributions arrive, I will be networking among my different audiences to get contributions and publicity. I'll have a PR specialist helping to write press releases, and reaching out to relevant bloggers and other influencers before and during the campaign. Any suggestions? Am I missing anything? Suggestions on how to ask for pledges from people? Tactics for approaching organizations to contribute to a Kickstarter? Pitfalls I might run into? Rewards that might appeal to organizations? Tear me down and build me back up people!