hi all i just got a response from some where els this is what thay think
"Well you can knock out that it is in the family of Blind Snakes, Pythons, File Snake and Colubrid snakes it is deffinatly in the Elapid family, but there are soo many elapids around that area it would be a stab in the dark but i was thinking maybe the (Cacophis) family which is 3 snakes in your area just based on the Head shape, maybe as you said the Mulga Snake (Pseudechis Australis) sorry i couldn't give you a deffinate answer it is really hard to tell a snake by it's skin, Thanks Tim."
thanks for all the posts guys