Wow--as usual, Fodorites have come through with some great input! Sounds like I need to start my reading and planning now, and begin to prioritize my activities. That's always part of the pleasure for me.

I would do your trip a little differently actually for what it's worth.

Three days in Barcelona. Two in Granada, two in Seville and fly from Seville to Madrid and go home and skip Madrid. I loved Southern Spain and if you like history and architecture, this fits the bill. It's different than the rest of Europe.

Madrid was Ok. The Prado was the only thing that really made me think Madrid was worth the spot. But I've been to a lot of European cities.

Just opening up your horizons a little. ;-)