This is the way. Unfortunately this is not going to work, not in a startup environment. You probably do everything except the throwing away and re-implementing part..
Nor in any environment where a client is paying you to develop something. Try showing them an MVP and then telling them "ok, now I know how to do this I will throw it away and redo it from the beginning". Not to mention that, with unclear and constantly changing requirements, you are unlikely to ever arrive at a point where you can say that...