You have a classic bike in like new condition many people would drool over. I wouldn't mess with it. As others have said, I don't know if you could even knock off 5 pounds, and you would not notice the difference if you could. Losing weight yourself costs nothing and may be more effective.

Ride that beauty and enjoy it for the classic that it is. In my weekend group most of us have Shimano Ultegra or Dura Ace equipped bikes with a couple of Campy Record 10s thrown in. Serious modern bikes - Specialized Allez, Trek 5200s, Klein Quantums, modern Bianchis. A couple of guys ride old 10 speeds like yours. Guess what? They keep up just fine at our moderate 20-22 mph pace. Worry more about the rider, less about the bike.

Look on the top tube for the model. Bianchi is pretty good about putting the model right there where you can see it.

Do go ahead and put some clipless pedals on. They aren't that expensive and are easily installed. You will learn to pedal more effectively.