We recommend a three year vesting schedule for all founders with a six month cliff. This means that no Units vest for 6 months, at which point 1/6th of your Units vest. After that, the Units vest monthly for the next 24 months until everything is vested. We think this is enough. When you receive your first major round of investment any sophisticated investor will require that the founders re-start their vesting, so this should be more than enough to get you there.