I have little direct experience, but what I do have all points towards failures of consensus.
Look at the most recent company you worked for, and from your colleagues think of: one idiot engineer, one idiot manager, and one idiot admin. Now imagine that they each feel they have equal rights as anyone to share their “input” into that business, and imagine trying to find consensus with you. Now multiply that problem by 10, because it isn’t just idiots that want to have their say, and most people have valid input that needs to be ignored because most businesses need a leader to provide focused power on a few plays.
I know of successful co-ops, but those seem to usually have a corporate structure and members have limited power, and I don’t know their internals.
Do you feel you have the skills to manage a co-op? Superficially you appear to be somewhat idealistic and innocent of the difficulty: although I think most traditional startup founders have and need those traits! Advice is cheap and experience is expensive: go with whatever works for you.