a) make sure there's a cliff b) define roles and responsibilities. the cto should have final call on tech matters, business on biz dev,etc. c) clearly designate someone to be a final call/leader type person. they should also have the board seat.

Equal equity is fine. It's the voting/power/decision making that comes with it. You'll end up with a startup bureaucracy where every decision needs to go through a 6 person committee. You will lose one of the ultimate attributes of a startup: speed

Personally, I'd also be asking yourself how you ended up with 6 founders and if all of them are "founders". Yourself included.