Check passenger side floorboard for dampness/rust
Check spare tire area for same

Some owners never cleaned out the sunroof drains resulting in rust.

Check brakes thoroughly. Calipers, Rotors, and Vacuum booster prone to failure at this age but not that expensive or difficult to fix if there is a problem.

TIMING BELT. Big one. Get it changed IMMEDIATELY (if you buy). Do the water pump at the same time.

Get a compression check done.

Origional Shocks are usually toast. Also not hard or pricey to replace.

CV Boots/Joints. Shouldn't be any clicking in the turns. If there is, this can cost a few hundred to get fixed.

A/C and the HVAC controls. AC can cost alot to fix, especially if you need to update to new standard. Regular Freon is not available any more for our cars. Sometimes the HVAC controls don't cycle from defrost to floor or recirculate. Play w/the buttons. If they don't all work, that can cost a few hundred to fix also.

While your checking A/C turn on every electrical item you can find like rear defrosty, all lights, etc. As the AC cycles on and off the headlights shouldn't dim. They will flicker a little, but not dim. If they dim, while you are getting the compression checked ask for an alternator test too. Alternators cost alot.

Thats all I can think of right now.