I would sugest if you want to do that the best route would be
M77 on to the M8 cross the clyde over the Erkine bridge to Helensburgh (cracking twisty road Garlochhead to Arrochar watch for cars crossing the middle of the road) To Ardgarten (No3)Look out for the giant eagle :cheer: Double back onto the A82 to Balloch (No4)
Take the A811 out of Balloch onto the A81 up to Aberfoyle (No2) I would forget No1 at the moment as you need to cross scotland to get it, Carry on the A81 and over the "Dukes pass" another biker road pick up the A84 at Killmahog on to the "Green welly"at Tyndrum for a bacon buttie. Drag your self away to Glencoe - Fort William then the A83 to Mallaig Ferry to Skye and on to Ullapool. Pick up the Cairngorm on the road back down.
My two cents worth....