The only area I would avoid going is Swat. There are no problems in Murree, the Galiyat, Kaghan, Gilgit, Hunza, Skardu except the day-to-day ones.
As for Quetta - you could go to Ziarat and Hanna Jheel but keep away from the Baloch areas. Extremist Baloch nationalists have targetted Punjabis.