Cleveland to Deam Lake

I'm going to be headed down to Deam Lake in Indiana to attend a festival in Louisville. I'll be leaving about 11-noon on a weekday from Cleveland. I'm thinking I71-275-US50-I65. Google says it's 25 minutes slower than going through Cincinnati and Louisville but since I'd be hitting Louisville at rush hour I think it's fair to say it'll be less stressful and probably close to even time wise. Can anyone see a flaw in the idea?