Last time i did a Scotland trip, we did an anticlockwise route from Edinburgh, up to Inverness then across to Isle of Skye and back down to Glasgow (click to expand) -
7 days total (2 up and down, 5 on the route) and we kept it to 100-150 mile days as we all wanted to explore destinations and do plenty of pit stops along the way for touristy stuff like distilleries (drivers didn't drink obviously), Mallaig train and bridge (fyi, carpark there gets rammed) etc.
Hopefully next trip, i would like to tact on Aberdeen, push it further north on the A9 and around the A838 for the NC500 feel/route, add a day around Loch Fyne and perhaps add Isle of Mull.
Camera-wise, didn't spot anything other than in and around Edinburgh and Glasgow and the locals didn't seem particularly worried - most of them tonk along (a lot more than the NSL) on what we would deem sketchy roads, even the local supermarket delivery vans would hurl themselves down the B852.
One place i would happily miss is Fort William; i thought it was a bit of a dive (was during the start of summer) and there's places that are a lot, lot nicer north and south of it.
Yup i agree as there is some great scenery even if you do get stuck behind caravans and campervans. Similarly there are some absolutely superb roads (few sketchy ones too) and scenery through the Cairngorms and some great places to stay, would highly recommend that as well.