When it comes to building something as a success, the first question should never be “what” but “who.” First of all, ask who you are being. Don’t approach a project as a way to make a living, approach a project as something you choose to be part of because it will contribute to making your life great.
Second, include the right people. A long-time secret in business is this: When the right people are present, the decisions made are good. When the wrong people are present, decisions are bad. Bring in the right people, not those motivated by money but those motivated by the same thing.
Make the question who, not what. Who are you being, and who are the right people. Everything else works from there.