Some nice roads near where you are, the wee back road from Kilmelford to Loch Avich is quite twisty and hilly, but also gives you options to explore around the Falls of Avich, and also to follow the ‘String of Lorne’ over to Scammadale, which is mostly landrover track apart from a fiddly wee bit in the middle.
In fact, the more I look at it, the better it looks, you could head south after the ‘Bridge over the Atlantic’ as if heading to Ardmaddy Castle, then follow landrover tracks (I have memories of walking here as a kid, think they are good tracks) to Kilchoan Bay on Loch Melfort, then to Kilmelford, over to the Falls of Avich, String of Lorne to Loch Scammadale, then follow minor roads back to Cuan. Looks like an awesome 60km and just the sort of ride a Vaya was meant for 😉
Actually think I might try this one when I’m home next…