I would do Lleida, there is a great climbing guide to the region as well, in English: www.lleidaclimbs.com/
My wife and I went there last year for only 2 weeks, the selection of rock is amazing, although most all are limestone the climbing is very varied. Goddamn I wanna go back today, the wine, cheese & bread is amazing and CHEAP!!! Camarasa, Margalef and Rodellar are sooooo sweet. Have fun!