After your Spuds and Toms are cleaned up apply some lime to your soil and sow your mustard seeds for a winter green crop........ Dig this in before it flowers.
This plot now belongs to the pea and beans. Your cucumbers, zuchini and melons can join this rotation. More reading I have done suggests putting the corn into this group as well.
Sow corn in September, November and January....
Sow more annual beans as the flowers begin to show on the last plants.