This morning, TMZ reported the majority of the cast members of Jersey Shore haven’t signed their contracts for the show’s fourth season. They’re set to leave for Italy in a few weeks, and it seems they’re suddenly aware this gig isn’t going to last forever so they want MTV to pay them hefty sums for what could be their last season. The only person who has signed a contract is Ronnie, but he’s not the only one looking out for himself by securing his next career moves — actually, Snooki receives the more the…