If the spring perches are fine, or have already been done, then just keep adding mileage and save the dough for any other things that might come up.
The M104 2.8L six in that car is bulletproof except for some tendencies to pop head gaskets. Mercedes also installed the first of it's "green" wiring harnesses in those models, and the main engine wiring harness can break down, causing high-rpm misfire and other symptoms. This failure is more prevalent in hot climates, but still happens here.
The 722.4 four speed automatic seems old fashioned compared to the newest 6, 7 or whatever speeds, but if you change the fluid and filter every 50K, it will last nearly forever. I had a 190E 2.6 with the same basic trans, and the engine and trans had never been apart at 509K, when I sold it.
The climate control system is pretty reliable, with the only real common weak spot being the interior temp sensor. Easy to fix if it fails. The evaporator can also leak, but luckily, the W202 chassis are pretty immune to that. On other MB models, it's common, and can cost $4K or more to repair.
The worm/roller steering box is well made, deadly reliable, and lasts nearly forever. The power steering pump is also strong, but you must change the power steering fluid every other year to keep it in top shape.
The radiator, like many new cars, is made of plastic, and the upper hose-neck connection will break if you let the coolant get dirty. Chane the coolant every other year, and it will last a lot longer. Also, only use MB coolant. It's expensive, but worth it.
The W202 C-Class was made from 1993 to 2000 (1994 to 2000 in NA) and in Europe, those are workhorse cars, not garage queens like many here are. Many of them around in Europe with staggering mileage. They have proven to be one the most robust Mercedes chassis sold, and the Euro diesel versions are known for their fuel economy and incredible longevity. However, the gas cars are also strong. The M104 engine is the weakest of the line (the M111 four had all the benefits of the six, save for the power, but didn't eat head gaskets) but still a good engine. The W202 is the last of the "simple, over-engineered like crazy" Mercedes products.