You cannot execute someone else's strategy. Nobody thinks about your business nearly as much as you do. No one can obsess over the problem more than you. You have more data than all of them combined. You're the one who has to execute on all the space in between. Every decision downstream of a framework you don't actually believe in gets wobbly. You just accumulate drift. When things don't go perfectly right (and at a startup, they won't), you'll start second-guessing the whole thing and think you probably should have just done it your way. So yeah, just do that from the start.