you have plenty of time, we fly the ATW-ATL-MBJ route 4-6 times a year and other than strong winds delaying flights out of ATW, you will have plenty of time to make the turn in ATL. Out of our last 25 trips using this route, I would say we only missed our connection twice and both times was due to booking the 45 minute connection and the plane was one hour late. They guote about 2h 20m for trip however wheels up to down is closer to 1h45m and with the early morning flights taxing to gate in ATL is usually pretty quick. If you have any other questions just PM us and we will be happy to help.