How long would it take to bike from midtown (4th street and Penn) to Courtland Street (GA State Campus)?

Juniper would be the best route. You could bike it in probably 20-25 minutes and drive it in 5-10 minutes with no traffic. Juniper does pick up traffic about 4, with heavy tracking starting about 5:30 until about 7. Driving in traffic could take 30-45 minutes depending on how bad it is.