Well Cumbernauld is your best bet then. That would make a lovely trip in clear weather. Oban, and Mull for true scenery, is only 40 mins away over the mountains, so with Sky Demon in hand, plan your trip. Also out West, to say Islay/Jura, another 40 mins from CBN, can be truly wonderful on a good day, Glasgow Control no issues for transit, VRP BAI, CITY, ARDMORE, and out would be good fun.
Best