This dough makes for three pizzas in my opinion, so after the rising process, I dividing into three rounds, and made three different pizzas.
Make the dough by adding the flour, yeast, salt, and sugar. Mix. Add the water, and with your wooden spoons, or hands, mix until blended. I use my KitchenAid for this process to keep everything in the bowl during the rising process. Mix for about 30 seconds. The dough should be a bit stiff. Cover the bowl and let sit at room temperature until the dough has doubled in volume, about 2 hours.
Once risen, divide into three portions. With one of the portions, add some flour to a large pastry board, and start rolling it out into your desired pizza shape. If you are adventurous, try tossing the pizza, to get your desired thickness.
Preheat your oven to 500 degrees with the pizza stone.
Add a bit of the light corn meal onto your pizza wheel, then add the tossed dough to the pizza wheel.
Top the dough with the feta cheese, then shower the top with the grapes. Drizzle a bit of olive oil over the top of the pizza, and place in the preheated oven for about 25 minutes, or until the dough is nice and golden.
Remove from the oven and slide the pizza onto a cookie rack, to retain a nice, crisp crust.
Let the pizza cool for about 5 minutes, then slice and serve.