Well. In the end we ended up heading along the coast more or less following the John Muir way. Cut inland and headed along L’Niddry-Drem road knowing it’d be faster traffic, but the wider road meant we were afforded more room(apart from some bellend in BMW suv who couldn’t wait until we got through some temporary traffic lights). The boy loved the fast road down from Drem to Direlton, even more from Drem to Yellowcraig. Only hiccup was forgetting to take a lock so the bike had to be dismantled to fit in my wife’s car.
Ted jumped in the car for return leg, so I headed back along the coast.
Oh and thanks for all the help, including a certain ex-member who must’ve read this bad got in touch with one off road suggestions, decided Ted would be rattled out his seat had we ventured off the Tarmac…