All I ever hear about is the "lean startup" model. Is there an alternative... like where I commit the next 3 years to build something awesome while I work a pa

All I ever hear about is the "lean startup" model. Is there an alternative... like where I commit the next 3 years to build something awesome while I work a part-time job? (my model) Can someone think of a cool name for that methodology? I don't want to be called "fat"...