I used the Greek Waters pilot by Rod Heikel, the Italian Waters pilot by Rod Heikel, and if you have time I highly recommend time in
Croatia, and for that I used the
Adriatic pilot by Tom and Dinah
Thompson.
I also took with me paper
charts of the areas and they're all obtainable from Imray-iolaire via the web. The pilot books are phenomenal with very specific information, but they're not usable for
navigation.
Sounds like an absolutely lovely time you're going to have!