On his day off the next day, Jimmy didn't go to the police station. He needed to communicate with James regarding whether or not to go to the FBI, as it wasn't a decision he could make alone. For him, the help James had provided over the past two years was tremendous. Without James's help, Jimmy might still be a common restaurant waiter.
Jimmy made an early phone call to James, didn't discuss the matter over the phone but instead scheduled a meeting. He would go to James's house tomorrow evening to talk.
Jimmy managed some of his household chores and then visited his private warehouse, where he had paid a year's rent. He only visited occasionally to check on it, not frequently.
This time he mainly retrieved his copied CIA documents. With these copied documents, there would definitely be an original in the CIA archives. Jimmy's CIA identity was undoubtedly valid; otherwise, Tom wouldn't have prepared these things for him.