That will be why then. I still recommend doing it anti-clockwise. The main reason is that by far the best part of the route is the Ryvoan Pass. The southern side of the pass is much higher than the northern side. Going anti-CW it starts with a short climb, occasionally steep, from Glenmore Lodge. During this section the views are fantastic, and it is good to stop at The Green Loch, there is a couple of slightly tricky boulder strewn climbs. Good fun and quickly walked past if not everyone is into it. Then at the Ryvoan Bothy you start a very long winding descent. It can be very fast and very fun, and seems to go on forever. I have tried it the other way (clockwise) and it feels like a long haul up to the pass followed by a far too short very fast and rocky descent.
The other pass on the route (Sluggan?) is not that interesting, its mostly commercial forestry and not so pretty. However there are some good short singletrack paths on the eastern side of the valley, up from Badaguish. They dont really play any part in a XC route though unless you have a lot of energy left over.
The route you have mapped looks pretty much how we do it. It gets tricky in a couple of places in the woods at the northern end of the Ryvoan Pass, generally stay on the most obvious path. If you do go wrong you will probably just find yourself somewhere just as interesting. Its all good around there really.