Purchase advice 156 SW 1.9 Diesel

Hello, I would like to buy a second car, should serve next to the E-Class as a “everyday car”. However, since I come from the Mercedes warehouse, as I can already foresee, I have absolutely no idea about Alfa Romeo. Now to my questions. 1. Can someone briefly list the most important things that I have to pay attention to when buying a 1.9 diesel, facelift (BJ from 04) , Kombi, Kilometerstand ca. -/+ 100 000 km? Would like to spend around the ~ 6000 Euro. 2. Which equipment lines are available e s at Alfa Romeo and which is the most expensive (e.g. with MB “Avantgard” ? How are my chances to find a car with electronic parking help? 3. How is the “handling” of the car? Do you have a good all-round view etc. ? Thank you in advance !