We (two couples in our early 60's) have roughly 7 days and want to see at least Mull, Iona and Skye. We are traveling from the States and will be in York, England for a week prior to visiting Scotland. We plan to take the train (contemplating renting a car) from York and end up in Oban on Friday, April 14th. We need to be in Glasgow on the 21st to catch a flight the next day. We are interested in history, walking, and local music/pubs. We prefer to minimize the number of places we spend the night not wanting to pack in too much. What would be your suggestions? Can we comfortably get around by train/bus in that area or best to rent a car? Thank you so much for your help!