Two more tips.

1. corn and tomatoes don't like each other. That said, Dad puts them next to each other, just as you have in your plot plan. He just doesn't have enough room to move them so he says. The rows nearest each other may not do as well as the rest of them.

2. When you plant your tomatoes, plant some marigolds around them. Marigolds keep the aphids away naturally. As the tomato plant grows, the marigold will die, it will get covered over and not see the sun. When I can, I go in and move the marigolds to my flower garden area.