Do you have both a 4-6 month idea and a 1-2 year idea? If you do, pick the one you are most passionate about. Keep in mind that 3 years is long time, its likely

Do you have both a 4-6 month idea and a 1-2 year idea? If you do, pick the one you are most passionate about. Keep in mind that 3 years is long time, its likely that whatever time table you start out with will be completely warped by the time you could commit full time to it.