With 135k km in 7 year means it has been putting roughly 20k every year, similar to your driving. So if I am in your place I will dig deeper in that bunch of receipts and figure out of how expensive will the maintenance be at almost half life of this beauty. Ask yourself a question, if you can live with that maintenance + 30% more as it will get more older and prone to expensive repairs year after year.
I understand that its a buyer market these days, so if you are getting a sweet deal then go for it. If not I wouldn't risk big money on 7 year old sports car.