Suntour, especially cyclone is not all that expensive on ebay. I bought front and rear
1st gen cyclone for less than $50 in mint condition. Superbe would be more unless I stumbled
on a deal.
and +1 to roadfan's campy suggestion. I put together a campy 8 speed gruppo for $250 back in
2001, although I got to admit $25 for brifters is a good deal. Chorus is going to be the best bang
for the buck (imho).

Marty