We will be driving from Salzburg to Vienna on a Monday morning in September. We want to stop at St. Wolfgang to ride the Schafberg Cog railway followed by a visit to Hallstatt. We pick the car up at 7:30a and have to return it 12 hours later. I have 2 questions. 1. Will we have enough time to do both? 2. If we don't have enough time to do both which one would you choose?