So far I am thinking about dividing the field in half the long way and then dividing the north portion in half crosswise creating two cornfields where I could then rotate each year between the two for corn. That would give me an area that was 20 feet by 62.5 for corn each year. If the corn was spaced 12 inches apart in rows 30 inches apart and if my math was correct that should allow for 500 corn plants. Perhaps the corn could rotate with beans or peas for their nitrogen fixing properties.
I am looking at putting a semipermanent walkway running east and west between the corn plots and the front plot. It would not be a hard surface but perhaps mulched to keep down the weeds and to reduce soil compaction in the growing spaces.
The front (south) portion could then be used to grow the melons and squashes and pumpkins as well as rows of other crops. I am planning to try the raised row type of gardening for at least part of the front part perhaps putting in a few rows to see how it works. In raised rows straw or compost is put on an 18 inch wide band on the soil or in a shallow trench. This is then covered with soil to create an elevated area where the plants or seeds will go. The straw helps conserve moisture, the elevated ground dries out and warms up quicker in the spring and the soil amendments only need to be added to the actual growing area, not the space between the rows. The space between the rows is mulched and becomes a walkway. The raised rows do not need to be tilled, the soil does not become compacted because it is not walked on. I am excited to give it a try. I have a pile of old straw that came off of the well piled here and ready to use.