Driving from Toronto - Many questions

[baby_tran]

What time did you start off on your journey?

How many hours per day do you drive?

Whats the location of your first overnight stop?

We'll be driving from Toronto in the middle of August with 2 kids (6 and 8). We're planning on using the Pennsylvania-West Virginia-North and South Carolina-Georgia to Florida route.

Did you pre-book your enroute hotel accomodations? Any problems with not pre-booking (i.e., would we find hotels are all fully booked)?

How often and for how long are pitstops?

Any interesting places along this route that we shouldn't miss?

Thanks