In reply to johnbb:
I note you say you can handle some driving, but if you have only 3 days then you need to choose one of Tarragona / lleida. There's more than enough choice within either of these for a week or more. I would say you will want the summer crags (N & E facing); March is spring.
In fact (I've just looked at the forecast) drop all other ideas and head for Cavallers - if you like granite.