Road condition is OK. yes ok to drive.
Road is narrow as compare to Nathia Gali Road with no railroads.
Some sharp turns are there.
Not steep than Murree Motor way.
Steep like murree to nathia gali.
No need to take lunch on the way as it is 1-2 hour drive from Abbotabad. At a point Kala pani there might be some resturaant... But don't rely.