I asked about where you live, as that will depend on how much "growing" time you have left and which gardening zone you live in. I don't think I would plant the zuchini, as they take up too much precious room and often they are free or almost free do to over abdunce. I had a small patch of spinach and lettuce that fed us for 5 weeks. Now it is too hot for them, but will replant again in mid August.
Here are some books you may want to check out at the library to get you all "fired up"
1. square foot garden
2 victory garden'
3 lasagna garden
4 animal, vegetable, miracle (for inspiration)
5 the $64 tomato (for humor)
sorry I don't have authors, as I am heading off the work.
You can also want to call or visit the local state extension office, they know what will grow well in your climate.
Keep us posted.