My staple crops in a humid 4a are typically Swiss chard, garlic, summer and winter squash, stinging nettles, lambs quarters, rhubarb, radishes, turnip, radish and carrot greens, buckwheat greens, sorrel and chicory, asparagus, tomatos and peppers, beans, and lots of peas, from field pea sprouts to podded peas, turnips and carrots, onions when I'm lucky, and a wide variety of berries. Radishes, turnips and carrots are excellent for holding up the slopes on compost hills. I experiment with other crops but those are my standbys.
I am not self sufficient but I don't buy vegetables. I do buy a lot of lentils and some rice, and arctic char and occasional red meat, preferably grass fed beef liver, tongue, and bones.