I recently purchased an 85 Bianchi Stelvio with all campy components. I want to get some lower gears on it but not sure what the easiest/cheapest option would be. I'd like to be able to use the same shifters and derailleurs.
Would it be possible to put a triple on the front with the derailleur I have now, or would I only be able to use a compact double?
Could I get a wider range 6 speed freewheel on the back?
Which of these options would give me a wider gear range?

Thanks