Actually that is possible. Plan the best roads to try and get to, don't beat yourself up if you cant find them, but dont be too strict in timing. Choose places you would ideally like to do/see but dont set too much of a rigid timeframe.
OR really just follow your nose and ACCEPT that you will see some great places and miss a few as well.
If your tarvelling alone you'll have all the time in the world to plan day to day rather than beforehand.
Have a great time
