On the seeds front, you really have to be practicing growing food from seed for several years before depending on them for basic caloric needs - after a few years of providing a fraction of our household calories on the property I can see the pitfalls, effort and planting diversity needed were we to need to scale it to that level. The previous me would have had some seeds and a dream, and have died real quick. Even now I give myself 50/50 that water, weather, pests, poor soil, or something unexpected would lead to starvation.