Unless you have a specific job lined up, go to grad school. You can explore what you want to do just as easily, and you'll come away with a degree at the end of that time. It will be a lot harder to get those references to write the second time around and a few years later, and you have no idea what the pool of applicants will be like or if the programs change or close.
There are a lot of threads on here from people questioning whether they are doing the right thing. I think most of us have cold feet or anxiety about starting in the fall, so you're not alone in that. If you have funding, go for it! If you don't have funding, try it for a year and leave if you don't like it. And you can always seek out internships while in school.
but that's just my two cents. Good luck!