Purchasing our first TT - is this set up safe?

Here are the MB things I was warned about (but never happened). You could have an airbag failure in the autolevel system ($2000 repair). You could run your transmission too hot and end up with transfer case seal leakage ($1500 repair). I towed the Kodiak with the GL450 for 11,000 towing miles. Still have the car and it still runs great. We love traveling and wanted a fifth wheel so I traded my MB convertable for the GMC 2500 diesel. Wife wouldnt let the GL go.