Um you can't do any of that. First off we dont have the technology to get to exoplanets at the moment. And having a ship that could fly around from planet to planet is just out of the question with current technology. Secondly. You cant just grow babies like that. They need to be in an actual womb. Also embryo implies that the egg was already fertilized. And lastly trying to raise a group of humans from babies with no human intervention would just end horribly. Babies are -blam!-ing stupid. They would be dead in seconds.