Scotland: How realistic is this itinerary?

Hi everyone! I’m starting planning my honeymoon in Scotland and wanted some advice. I’ve heard that whatever the google maps driving time is, I should probably double it in Scotland. I’ve tried to give myself plenty of transit time to see and explore on travel days. Does this look realistic or will I be missing a lot in these locations?

Day 1: home to Edinburgh (flight & train)

Day 2-5: Edinburgh

Day 6: rent car and travel to Isle of Skye

Day 7/8: Isle of Skye

Day 9: drive to Orkney Islands

Day 10/11: Orkney Islands

Day 12: drive to Inverness, explore city and maybe surrounding areas

Day 13: Cairngorms NP

Day 14: Tavel to London

Day 15: travel home