I am lucky to have experienced (and survived) a similar trip this week-end.
From Islamabad - Peer Sohawa to Kohala-Bala and then to Lora (exited at Ghora Gali) and back to Islamabad (via Old Murree Road), on my CG125 (about 100 km in 5 hours). The scenary was awesome and most of the time it was raining heavily. The trip was so exciting and breath-taking I couldn't take any photographs
Definitely a must-visit for all adventure/nature lovers.