Late to the party, but I want to point out that Highland culture is very different to than in the southern Scotland. The Highlands are heavily influenced by Gaelic traditions, where the Scots of the lowlands had more contact with English and European (especially France) traditions. For example, the Highlands did not recognise the King of Scots as their king, until they where forced to by James VI (many kings before had tried to and failed.) If I was going to recommend any novels, I would put Nigel Tranter at the top of the list, who is far better than anyone since for capturing the period, and wrote numerous novels throughout the medaeval period. For early period I recommend a book called From Caledonia to Pictland (James Fraser), and for later 'Dominion and Lordship - Scotland 1070 - 1230' (Richard Oram). Anything by Oram is great, so is GWS Barrow and Jenny Wormald. Also of interest might be 'Alba' by Alexander Ross. I also recommend the BBC's A History of Scotland presented by Neil Oliver, which talks expressly about the conflict between Gaelic and Scots Scotland.
If you are interested in contacting academics, your best bet is through the University of the Highlands and Islands, who specialize in Highland history, culture and literature.