A garden is supposed to supplement a diet, not replace what you are already eating.
Gardening provides better nutrition than store bought vegetables (if done right) as well as exercise.
I would recommend planting a lot of spaghetti squash.
I also noticed something this year. I bought a single packet of Roma Tomato seeds. That one packet got me over 50 individual Roma tomato plants. Each individual plant will grow over 50 tomatoes this season (yep, started them from seed and I already have tomatoes - the plant is about as tall as me and its been 3 months).
I discovered I had enough tomatoes to feed half of Cleveland

so I started giving tomato plants away. My mom has 8 of them in her yard now. I have friends that took some and followed my instructions as to where to plant them and how much water etc. and they have large tomato plants that are yielding delicious Roma tomatoes.
The seed packet cost me a buck fifty.