Also if you are going for a long drive till Abbot abad than you should add the following Neighbor Cities:
Abbotabad.....Mansehra.....Balakot......Shogran (85-87 KM)
On your return Leg you can go back to Islamabad Via Nathia gali Route.
If you are driving your own or with single driver than avoid driving in night, Some checkposts in the way.