On a good day it is fantastic with fabulous scenery and fairly quiet roads. Wet weather gear is a must as almost nobody gets round the country without a drop, or two, of rain. :P The NC500 (North Coast 500) is a five hundred mile trip around the north of Scotland and is well worth doing. There is an App you can download from which you can get the itinerary, maps and recommendations.
I have always fancied riding over where you are. Funny how that works out. I think New York to LA would be nice to do, taking plenty of time and seeing the place properly.
Ride safe. 👍