Garry thanks for posting regarding my query.
I had a great time on the trip, and as you suggested, came over Thompson Gorge Rd rather than Omarama Saddle. I arrived at St Bathans at 6pm and didnt have the nerve to tackle Omarama at that time of the evening, when there may not have been many others on the track to pick up the pieces.
I have since ridden the Rainbow Rd through to St Arnaud and back which was great.
My plan now is to ride the Nevis and Mavora Lakes roads at Waitangi weekend.
Im definitely finding the WR easier to manage than the DR in my novice state.
Thanks again for posting