Great find, nice looking machine. Looks exactly like my wife's '97. For 'only' 85 hp, it is a surprisingly versatile machine. Rides like a dream, tows tubes well, and has great fuel consumption. My wife and I traded for a couple of hours last time out and she couldn't wait to get back on hers, lol!
The best we've seen on GPS is 47 mph. Doesn't seem to matter if it is my fat 235 pound butt on it or her 100 pound lighter one...same speed. I added a tachometer just for grins and to fill the big black plugged hole...amazing the visual difference it makes to the instrument panel.
As for the abraded gelcoat...as others have noted, it isn't that big of a deal. I'd only be concerned about water intrusion if it was left in the drink for weeks at a time. I would, however, do a quality gelcoat repair over the winter, as suggested above, if it was mine, simply because I like having things look 'like new' as much as possible as well as to ward off possible future problems.