There was a Super Corsa in 1982 and it did have an Everest freewheel and Super Record components. Does your bike have Chrome headlugs, fork crown, seat stay caps (with Bianchi pantographed on them) driveside chain stay and dropouts? If it is a Super Corsa there would also be a serial number on the bottom of the BB shell in addition to the numbers on the seatlug.
If it is a Super Corsa I would definitely vote for Celeste as the Corsa is the team edition bike and Celeste was the team colour.