free to be able to rate and comment on reports (as well as access 1:25000 mapping).
Short and sweet today... just a few observations.
1. Easy mountain bike approach as far as White Bridge, then it becomes more technical (probably only people fairly competent on a mountain bike).
2. After 9.8km, a small cairn marks the junction to the path up Beinn Bhrotain (hide bike here). Stunning views towards the Devil's Point.
3. Straightforward but fairly wet walk at times up Beinn Bhrotain, boulder field on descent to bealach with Monadh Mhor, then easy path onwards to summit.
4. Steep descent path from Monadh Mhor bealach towards Glen Geusachan. This area is very wet underfoot, saturated ground and boggy, faint path. A long tiring 6km back to the bike.
5. Bike back is a relief, especially with a tailwind

Looking from the Monadh Mhor summit towards Sgor Gaoith and Mullach Clach a'Blair, it looks a long way and maybe not very exciting to walk. If you enjoy a mountain bike, I would go from Linn of Dee.
Below is a wee timelapse from near the bealach, looking over the Cairn Toul traverse.