Look at the guages more often. Invest in a digital one with mapping as well so that you can actually know how much and when you overheated.
Look for damage. Avoid mechanic; consider him a disease, a chronic one for sure.
If you are specialised with tools, check factory specs and warpage. Any oil leaks or coolant fumes in exhaust, in near future, would mean trouble.
P.S. MAX level? Dont ever go blaming the car ever now. And develop a habit to have basic checks on finger tips before driving off. Do your life and family a favor.