You've done too much reading on the subject already and will learn nothing from reading even more by indulging yourself in the comments here.

And although good teams can find good ideas they have to "try and fail" at things, not just "consider and not try" things. I'm not sure how long you've been at this and which ideas you have considered and rejected and for what reasons, but if it has been longer than a couple of months, you don't have the right team makeup. You need someone with a strong product background immediately to find the intersection of product market fit and what you all are actually good at and will be passionate about building.

I'd love to hear more about what you've thought of and dismissed.