My recommendation Jags would be to do Skye, South Harris, Lewis and the Western coast upwards from Ullapool to Cape Wrath. If you do go to the Outer Hebrides, the Golden Road which goes around the entire coastline of South Harris is probably the most beautiful single day ride I've ever done, stunning contrasts of landscapes between east and west coasts, about 55 miles round trip to Tarbart, where I left my luggage for the day. Would also highly recommend going from Portree in Skye around the Trotternish peninusula, the eastern side of which you can get the ferry to Tarbert. The West coast is hilly however, but not too mountainous!