I grow carrots, tomatoes, a couple varieties of peppers, parsnips, leeks, and beets in zone 7a, OP. My total space is about equivalent to yours, we plan it out so we always have something in year round - get a veggie gardening calendar for your region (your state dept of agriculture or local universities are likely to have this info on their website in a PDF) and pick a couple of things you like for each season.
As well as water mentioned above (important) you will also have to feed, because veggies take a lot out of your soil. Do not use regular flower feed, make sure you use the right kind for edibles, in case you wind up with something like molybdenum poisoning or whatever.
You will have pests. We use pop-up mesh things to keep most bugs off, but at some points in the year you'll be out there twice a day picking hornworms off your tomatoes. We keep bigger pests like rabbits and deer out by having a big-ass fence around our whole lot, and multiple dogs. Your mileage may vary.
Lastly, don't be disappointed when you lose crops due to whatever random weather event happens. You'll find that some things, even certain varieties of things work, and others do not. You have to pay a certain amount of attention to things to make it work, but the end results are sorta worth it!