Hullo Mark,

Good luck to you if everything is rolling along smoothly.
From your figures you made a POT of 3.49% from backing every horse in the race.
It just seems a tedious task for such a return whereas if you selectively backed "certainties" in NSW or with IAS you would return at worst a 4% place div and you only have to back one horse. You may only have one bet per day whereas backing a number of "certainties" for the place a punter would be able to magnify returns significantly. Especially if that punter "pyramided" his/her wagers.
As I said, all the best to you.

Cheers.