There is a reason you are looking at this vehicle and we all know what that reason is. They have a reputation for running forever. Whether that is mere speculation or science fact is up to debate for some, lol. In all seriousness I had the oil changed with Royal Purple HMX because it has special properties to help soften seals internally and clean out the engine, while protecting your engine better than standard oils. I used that with a Toyota oil filter. Then changed the spark plugs and had the U-joint replaced as well.
The interior is in very clean shape for a vehicle this age and with this mileage. That's more than likely is a sign of why it still runs. Chances are good if they kept it this clean inside, the maintenance was probably reasonably kept up. Exterior is finished in a very rare Glacier Metallic color (although the paint needs a refresh). That's kind of expected as Toyota wasn't known for their stellar paint finishes. The body is in really good shape overall.