Completely understand the need to raise funds in order to move forward with the vision of your business, but I'm not convinced kickstarter or indiegogo (or any other donation-based platform) is your best route.

Do some research on ways to conduct pre-sales, which is essentially what you need. I believe there are some nice wordpress themes + plugins that would allow you to start collecting leads and converting them to paying customers on a waitlist until you hit a specific number. That might be a good option. I believe bigcommerce and shopify also have apps that make that possible as well, if you want to go a more traditional ecommerce route.

Have you thought about just moving forward in a grassroots way-- signing people up one at a time face-to-face, until you have enough paying customers to get going?

Good luck!