A82 Heading up to Fort Bill, Tyndrum, Green welly cafe lots of bikes stop here you can fuel up here to.
Fort Augustus up to Inverness take the B862/B852 this road is not as busy as the A82 no coaches or trucks in your way,
A832/A835 up to Ullapool cracking biking road, and plenty of camping,hostels, B&B in Ullapool,
If your returning back down t'other side I can recommend the Ardlogie Guest House at Aviemore 01479 810747.
A93 Ballater down to Blairgowrie is not to be missed another cracking biking road,prepare for take off
Alyth Road Blairgowrie B&B Old Cross Inn 01250 875502 is very good.
Hope you enjoy Your trip
John