In reply to Pids:
Thanks for all the responses guys, did it on Saturday and weather was pretty decent.
Biked the 8 miles up the private road from Ullapool to East Rhiodorrach Lodge (all road) and then followed rough track to the west of Meall na Moch-eirigh then up the valley / river and up to the top, returning via the coll between Meall nam Bradhan and Creag DubhChois weher we picked up an ATV access track to take us back to Lock an Daimh and the track back to the bikes, then a roll out to the delights of Ullapool.
16 miles of bike and 16 miles of walking, great symmetry - not to be done in a wet dreich day but decent enough way to get into Seana Bhraigh from Ullapool.