You are perfect candidates to work through the book Disciplined Entrepreneurship. It is an MIT-based workflow that helps you explore why you want to start a business, what your assets and strengths are, how to validate your ideas, and much more. It would have saved me countless headaches and tons of money if I had used it when I started my business in 2010.

There are plenty of great pieces of advice here but Disciplined Entrepreneurship is literally a step by step guide to solving your question. I highly suggest getting it and working through the book as a team.

Please feel free to touch base if you'd like to chat about the book or anything else.