Go with David, he usually knows where the Owls are, right down to the tree.
Do not, if you can avoid it, drive at night. Apart from the natural dangers (animals on the road), bandits frequently set up road blocks, and I am not talking about the police
)) Also, national parks won't let you in once it is dark.
I found the backroad interesting, as it is little traveled, making for some good birding. It is kind of rough in palces, especially if it rains, making a 4WD a must.