Yes, I was aware of that, but even if you reduce the 5 years it took to traverse the distance in half, we will still need 72 generations to survive in a space ship.
I will volunteer for the first generation reproduction, if NASA provides me with a mate of my choice hahaha.
But in the interest of fecundity and perpetuation of the species...they should also provide a bevy of spares for you. Just to be on the safe side.