We heard of Walk91 by Web, then via direct email dialogue which IMO worked very well.
The Great Ocean Walk itinerary satisfied our group needs, will need to finish the missing leg in the future and will be in touch.
The Great Ocean Walk accommodation, organisation etc were all first rate. We had no problems at all finding the meeting spots each day. We were very pleased with the actual walk, diverse and not too hard, blessed by good weather which helps. However Parks Victoria could remove the superfluous electric wire near Moonlight head!
Our tips are.. Just make sure you have enough water and a good jacket and hat.