I would stay on the main Dual Carriageway and head straight back home, as the roads are rubbish up here. You would hate it.
Only joking, you’re going to have a great time.
Head west from Aberdeen towards Tarland or Alford, then from here I would head in a north west direction to Dufftown via the Cabrach. From here I would head to Grantown Upon Spey, Tomintoul and then over the Lecht to Ballater and then out to Braemar. From here head south towards Pitlochry, Aberfeldy, Crieff and then to Stirling.
To be fair, most of the roads are very good for driving at the above places out-with peak commuting hours.
Have fun and let us know how you get on.
Looking forward to hearing back from you.
Steve.