When to leave? By Thursday PM you'll be in the 3 day cone which (going by current history) is pretty darn accurate. That would be my go / no-go time frame. TS force winds would enter your area around Sat PM. What is downside to leaving early rather then later? Not much, you burn some gas, help the local economy with some nights in a hotel and get familiar with the menu at Cracker Barrel. Drive a few hundred miles a day, find a hotel, stop, fire up the WiFI and collect more information then plan your next move. If things look better stay put, if things get worse - keep driving. My worry would be gas. Down south here the lines are already getting pretty crazy.

So the NHC is going with more western solution (for now)... interesting. This was my call this AM and I haven't seen enough information to change it.