We're heading down in less than 2 months from the St. Louis area. This is our first year driving. We're still debating whether to break it up into 2 days or try to push through in one. We'll have 2 drivers (me and DH) and 2 littles in the back. So for those of you who have done it before from that general area, do you do 1 day or 2? Any tips on favorite places to stop for a break or stop overnight? What's your preferred time for hitting the road? Any stories/tips/advice would be greatly appreciated!