Ditch the aero bars right away. Pricing depends on your market. Where are you? It'll bring more cleaned up and ready to ride. Expect a full overhaul at a shop to run a pretty penny compared to doing it yourself. 600 Tri Color is good equipment, but not top shelf. Giordana, while a quality frame, doesn't have the same name recognition as a DeRosa or Merckx.
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My bikes: '81 Trek 957, '83 Trek 720, '85 Trek 500, '85 Trek 770, '81 Merckx, '85 Centurion Cinelli, '85 Raleigh Portage, '92 RB-2, '09 Bianchi