How frequently has it been serviced? If it’s set to flexible servicing, it may not have had many oil changes in that mileage. In contrast, a fixed service interval would mean an oil change every 10,000 miles.
Also, what is your intended use like?
Regarding the DPF, it would be worth having someone with the capability to interogate the OBD to determine the likely status. Even with appropriate use, it could well be close to filling with soot.