Sounds like a find, so go out and find a MB mechanic and hire him to inspect the car.

RCM replaced,

camshaft and crankcase sensors are an easy install (100$),
battery should be no more than 4 years old (150$),
look at available records for fluid changes. Have brake fluid tested for possible replacement.
decent tires are under $1,000.........(Rubbage ?). Check for tread wear, dry rot, and manufacture date.

For an 19 year old car that looks new and drives nice and tight,.......sit down and talk with the owner.......your knowledge will make an impression while talking about what has to be replaced and fixed.

....pursue this......And take comfort your father is inclined to guide you, for there is lots of fun ahead. This site has many wise guys to assist

This is a very well made car. A solid choice.

good luck.Xavier