I wouldn't argue with omitting Pamplona, either. To me it wasn't all that exciting. Of course, I haven't been to Valencia, but I'm looking at that list of destinations and suspecting I'd flinch if I knew how few days were going to be spent in Barcelona. In any case, I'd choose Girona (which has some good side trips, too) over Pamplona or Zaragoza or (yes, sight-unseen) Valencia.
I don't mean to suggest that Pamplona and Zaragoza are bad destinations, but they're about 1 day each for me (aside from that proposed long day-trip to Teruel from Zaragoza). To me, Girona had more going for it, plus the attractive side-trips to Figueres, Cadaques and Besalu.
However, one positive point for hitting Zaragoza on this trip is that it can be really miserable in the heat of summer. The odds for bearable weather in late September or early October seem pretty decent. Pamplona can also bake in the summer, but it's not as bad as Zaragoza.