Canary,
if you are going from Oban to Mull you could then get the short ferry to Lochaline on the mainland then head for Malaig and across to Armadale (All Cal Mac) on Skye. Assuming you are not going to the Outer Hebrides you can get the ferry from Kylerhea to Glenelg which is a small private turntable ferry. From there head for Kyle and up the coast to Plockton and keep as much to the coast as you head north. A lot of single track roads but worth it! If you have not been to Orkney before it's worth getting the ferry from Scrabster to Stromness (Northlink Ferries) and return from St Margarets Hope to Gills Bay (Pentland Ferries). I hope this helps.
You can also do a daily report with photos for us