Definitely east, Eddsfield is a great stopping place, then fly up the coast speaking to Durham and Newcastle, clearances through the Class D readily available. Stay east of the EDI zone, routing SAB to Montrose if you are comfortable over water, otherwise a shorter crossing North Berwick to Fife. Then it's Stonehaven Lane, Peterhead Lane to Drumwhindle! 18 strips to choose from in Aberdeenshire dependant on your TORA requirement.