Holy cow, that's my wet weather commuter rig almost exactly: 1993 or 1994 rockhopper, narrow tires, fenders, lights. No computer, this is not a fast bike, so I'd rather not know, you know?. This bike is all original components, everything is on the verge of wearing out. Chain worn, cogs worn, bottom bracket creaks. Ok, I did have to get new brake pads after the city sanded the roads.
Anyway, good luck!