Welcome to the site. I recently bought a '99 Saturn SL2. I didn't get as good a deal.
Mine has 94,500+ and I paid $2800 for it from a dealer in Paramus, NJ; originally listed on Ebay. It is currently undergoing a head modification at a friends house in Ickesburg, PA. The head is being ported, valves ground and back-cut, and a few other mods such as the Somender(sp?) Singh grooves and power lynzs in the intake runners and grooves on the backs of the intake valves. The grooves and power lynzs are intended to induce swirl in an effort to increase combustion efficiency.
As far as other suggestions, keeping the speed down, as stated above will help a lot. My SL really started to suffer FE loss when I got much above 60-65 mph. You could also replace the air intake temp sensor with a 110 ohm resistor. This has help significantly on my SL in the past. I don't know where it is, but there is a thread somewhere on that. SVOboy? Once again, welcome!