Wow, that's a nice piece of marble, especially at that price!
I've been shaping dough on a large piece of granite placed on top of a work table but I recently purchased a 24" x 60" stainless steel commercial kitchen work table and set up a dedicated pizza station at one corner of my kitchen. Now I just shape the dough on the SS surface. Works really well, and my WFO is just 10 feet away from the table, just out the side door.