Eskimo
I was up there yesterday and if you're planning to start at Achlean I don't think you'll manage to bike up. There are too many rocks and those lateral drains to bypass.
Ironically, once you make it to Carn Ban Mor things are way easier. Sgor Gaoith and MCaB sit on an undulating plateau. Solid underfoot and no obstacles to overcome.
Watch out for the cliff to the east. It's a long drop to the water