Looking To Buy 1992 Estima/previa

[Puls]

A gent around the corner is selling his 1992 Previa All-Trac 4wd. Its got 131k miles, an automatic transmission, and 4-wheel disc brakes with alloy wheels. The underbody is solid, but it has solid minor body rust in 2 places, and one slightly cancerous spot under the driver's side door (I guess its passenger side in the UK :P )

It has maintenance records up to 90k miles (belonged to a local corporation) and has had a recent tuneup. Also has new struts and front brakes.

As for problems: The AC does not work right (condensor is bad) and it has a somewhat lumpy idle, despite the recent maintenance. It also has a couple of minor exhaust leaks. There are no warning lights on on the dash. I'm thinking the idle could be an 02 sensor or maybe a vac leak. The interior could use a vacuuming, but otherwise is nice. Overall, its not in bad shape for a 14 year old car.

Is there anything else I should look for on these things? Common problem areas? Help is appreciated!