Okay first hand update
Took the kahuta azad pattan rawalakot arja route on way to Bagh/Sudden Gali due to traffic mess in murree area. The road on AJK side is good but Punjab side is a mess. This route is pretty long for bagh.
For sudhen gali we took the bypass road just before the bagh main bridge as the other road had a land slide near sudhen gali.. the bypass road was newly carpetted, had some amazing views with very steep climbs.. Car can do it without any problem.
On way back.. we took the sudhen gali bagh main road.. the Nalla crossing has a new bridge now.. the road condition is not as good as bypass road
On way back we took straight to Dhirkot from Arja... the road was excellent.. road under construction around dhirkot.. but the okay till kohala.. Overall best recommended route from islamabad to bagh...
will post a few pics later