Learn about bulk foods and cooking methods that your can use when there is no power to your home.  Many of the websites selling food will have blogs as well as links to helpful information.  Why not use them to increase your overall knowledge and  become familiar with additional tactics and strategies for storing food for the long term in a hassle free manner?
It isn't hysteria, and GMO isn't 'evolution'. One of the biggest issues for preppers and survival is that GMO seeds will not reproduce in the same way if the seeds are saved and re-used. In fact, in many instances (maybe all?), it's illegal to save the seeds and re-use them! It's far better to track down heirloom seeds that are native to your area and/or compatible with your climate. A good place to start looking is ×