Our plan for this stage was to have no plan. We rented a car and drove around, booking accommodation after lunch each day depending on where we thought we would end up. Not a bad way to travel in the off-season when accommodation was available on the fly. We packed in Delphi, the Rio-Antirrio bridge, Olympia, Methoni, Koroni, Mystras, Mycinae, Argos, Napflion, Corinth, the Temple of Poseidon, and a host of other places we found on our random wandering. We didn’t even bother with Athens (who wants to fight Greek drivers in a big city… not us). So much history to absorb, and only a few days to soak it all up! Highly recommended (out of peak season).
There are two annotated galleries with lots of photos:
https://photos.app.goo.gl/bPLn1oLHxMpJW8E89
https://photos.app.goo.gl/Bf7xC3QVhTbSh7iv8