We usually don't disagree much with each other, but I'm going to take issue with Dave here a bit. With the route you've laid out, the fact that you "don't [want to] have to kill it each day", and since you plan on visiting friends in Memphis, I think you're going to use up the great majority of your 6 days (forget 5) just driving. You'd have time for only a short (far less than an hour) stop or two each day at venues just off the highways. You certainly won't have time to detour to and enjoy national parks, scenic wonders, or anything else. That's a hard-earned lesson: simply ignore any drive time estimates you're getting from mapping programs. They're sheer fantasy. So my first, and so far only, suggestion would be to find more time for this trip.

AZBuck