Awesome idea! And a noble cause. But one word of advice - since this is a niche market you guys should focus on natural growth and profitability instead of getting too much VC money to fuel explosive growth.
As such the profits wont be able to keep up with VCs expectations if they invest 100s of millions of dollars. OP has a great first mover advantage and knowledge of the market, and they can capitalize that but the idea isn't worth billions.