Not sure why you'd limit it to moderate touring. In 1988 (as discovered) it was the full-on touring bike. It originally came with a nice Blackburn rear rack. The stock canti's work fine with 700c wheels if it still has the original 27" wheels. At $180, even with some updating to do, that's a fantastic price.

Here's a pic of my mildly updated (cranks with circular rings, 7spd freewheel, Tiagra brifters, and 700c wheels). I'd planned to sell it, but if the going rate is $180, I'll keep it for awhile longer.