Spent many happy years in the Highlands on HM's Kipper Fleet. The Speyside distilleries are worth every minute of your visiting time & most are in easy (driving) reach of Inverness or Kinloss /Lossiemouth (if you can get permission to land there). The local gliding clubs also may accept you, for me the best place to be was at the Highland Gliding Club (just south of Elgin) depending on which direction the wind was coming from depended on which distillery you could smell - pure heaven!
Best of luck
Rk2
PS If your up that way, suggest a visit to the Baxters Soup factory at Fochabers, sounds sad but it's very good with guided tours etc & it's also free (most distillerys make a visiting charge now)