I'm gonna be tilling up a 700 sq ft portion of the backyard for in ground growing and I need to know how much compost to order. Reading has told me to use anywhere from 1 to 3 inches and one source recommends 4 inches. That's a huge gap in opinion so i'm wondering what everyone else does? The plot will consist of mainly peppers but will also be growing corn, carrots, melons, tomatoes, gherkins, romanesco, radish.. and lord knows whatever else.. Thoughts?