To plan or not to plan?

I prefer to plan my trips well ahead of time, but I do it in steps. First I select the most direct interstates. Then mark "overnight stops" about every 300-350 miles. Second, I look for things near those stops that I might want to see and adjust my route for them. Third, I decide how long at those stops and look for FHU CGs in the area, preferably a KOA as they're usually close to attractions. Finally, I make a reservation, but not until I'm 2 days away. That gives me maximum flexibility to stay a little longer or leave a little earlier from a previous stop. Works for me, and I'm the only one I have to please.