I think all things mentioned are good to look at but yes, check first. Have an inspection done if need be...it might cost a little but if you can do it before the sale it would be a good bargaining chip or tell you if you need to walk away.
If they took good care of outside there is a good chance mechanically as well. Original owner? If not how long have they owned?
I traded my truck in on my new class a and bought myself a 2004 suv with only 66k miles and 3 rows of brand new looking leather seats. I didn't replace everything on it....I examined what I could see and feel from drive, took it it shop to check and make sure safe while getting an oil change, and been driving perfect since. Seller had just put new brakes on it...why would I replace them?