Whatever you say, sport!
Life loser and man-child cosplayer gets out early for good behavior. With a federal felony conviction on his record, life loser will continue losing as his employment prospects are largely limited to blue collar warehouse and service work. He might not have been violent but, he was stupid and went out-of-his-way to be stupid in the most public way possible. He cannot escape a Google search conducted by human resources departments and potential dates for the rest of his sorry life.
50/50 chance that he goes back to prison after getting mixed up with unsavory characters because he didn't learn his lesson or because he was desperate to scratch out a living.