hi .. you can take hazara motor way route. as its express and it will lead you to haripur.. from there you can straight go to abottabad.. Manshera and naran.... you can go to babusar top easily in ur car..
you can take your parents as well. if they dont have any breathing issue.. as the oxygen level is less at top of babusar.. PTDC Naran is the place to stay .. very much clam and serene.. your parents wud surely enjoy there..
you can have the booking done easily.. .. I came back to karachi from naran road trip on 15th July.. my mom 73 ma sha allah was also with me.. and she stayed all the way fit and fine.. alhamdoillah.