Deleting customer’s image media files which are older then 90 days

HI there, I would like to buy the pro addon to be able to run cron jobs with deleting customers’s images which are older than 90 days for scheduling. But I need to know exactly that am I able to do this? Can I select only the customers’s images (not all media files as they also have videos) which are older than 90days and remove them? Thank you for your answer.