Do you drive a lot at home? Why not "leave the driving to.." the pros. Drivers miss a lot of gawking. Driving in Spain is no holiday. An Aussie told me its terrifying.
AVE rapido trains are super fast. Barcelona to Cordova 2.5 hours±.
Long distance travel eats time and money. You've got little time to waist between ......
Rent a car locallty if you can't stand it. Train stations are not waisted time. They are a chance to see everday life.
Don't plan too much, too tightly. You need time to yourself and to just digest the constant sensory overload.
And give you guys slack to change itten. along the way.
This should be an adventure, not a rat race.