Spanish winter sun

Meadow 49ers

Hello, we have just bought our first caravan, a Swift Conqueror 530, and are hoping to go to Spain for some winter sun next Feb/March 2015.  Our initial thoughts are ferry to Santander/Bilbao then travel to San Sebastián for a few days, Saragossa for a couple
of days and the. Travel to Puerto de Mazaron for 1/2 months.  Return journey would be through Spain and France to visit WW1 grave sites.  Any suggestions/recommendations would be gratefully appreciated by two caravanNing novices.