I am planning a trip to Spain and Portugal next year with 3 other friends. I'm looking after the Southern Spain part of the trip, and we will be driving. I've allowed 10 days, and have mapped out a trip that takes us from Madrid > Aranjuez > Valencia > Murcia > Granada > Malaga > Ronda > Cordoba > Seville > Merida then back to Madrid (so we can fly out to Lisbon). I've found a few suggestions of things to see and do, including a palace in Aranjuez, cathedrals in Murcia, Alhambra in Granada, the Rock of Gibralter, birthplace of Pablo Picasso (Malaga), visiting a Mezquita in Cordoba and Chichen Itza in Merida.
What do other travelers who have been to Spain think of this? Are we trying to do too much? Any suggestions on places not to miss (or places to avoid)? My friends and I love nature, historical places, food, wine and festivals. We will be traveling in June / July next year.