Buy the best flashlight models you can afford, and focus on a blend of output and runtime. Variable mode and output lights are more complicated to use, but their power-saving features and different color LED’s may be worthwhile. Lights are useful for signaling anytime there is low or no light, and powerful ones can be easily seen for miles, so don’t skimp on output.
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 ×