The early numbers are in and it appears that as many as 7,400 postmasters and full-time mail handlers could be headed for the exits under separate buyout/early retirement offers from the U.S. Postal Service. For both groups, the sign-up deadline was Monday. Although applicants can still back out, the Postal Service anticipates that between 3,800 to 4,200 postmasters could resign or retire in response to the $20,000 buyout incentive, USPS spokesman Mark Saunders said today. The Postal Service is offering full-time mail handlers $15,000 to take the money and run; between 2,800 and 3,200 may go, Saunders said. One thing is clear:…