Used car search – realistic assessment

Hello, I’m new here and I haven’t dealt with the topic of used car purchase for a long time. I’m looking for a big station wagon for my wife and since I’m looking for something special, timeless and robust I came to the V70. Since our budget is quite scarce due to house conversion/renovation measures I’m looking for a vehicle between 4000-5000,- EUR. My question is, if it makes sense to buy an old Sweden from approx. year 2000 and what is there in this price class . My ideas would be: A vehicle without “maintenance jam” – definitely with timing belt change, i.e. approx. 160-200 tkm, gasoline with climate (and what else?). So far I had seen 5 Fzg., of which 2 test runs – at 2 there will be a test drive soon. (The first was actually quite OK, but the air conditioning did not work, the second I would leave my fingers of it because strange noises from the drive were noticeable). Both were just under 4000 EUR – so that I guess I’ll be looking at a V70 in class ~5000 EUR next. What do you think about that?