All IMHO of course.
A. 100k is young even for petrol motor. And very young for a diesel. The more important question is, are those kays alot for that year model? If so, then this will affect your re-sale and the ease of moving it on one day.
B. I wouldn't call this car a 4wd as there is no low range.
C. Many modern diesel injection systems these days are known to 'play up' at relatively young age. Try googling Toyota D4D injector problems or Nissan ZD30. My mate spent over $2500 on new injectors for his late model hilux D4D at around 100k. He wasn't happy