That is weather dependant. I like to pack a dry tent. If you look st one of the photos above you will see a heavy dew. I was up at 7:30, had a shave and freshen up in this creek.
Then I cooked a breakfast of rolled oats and a cup of coffee, wiped the tent outer with a microfibre cloth, packed up and was on the road by 0910. By that time the kangaroos, or most of them, had gone back to bed after a heavy nights grazing.
So, if you just want to get up and hit the road, then 30 minutes is feasible. Taking your time over breakfast etc. would lead to an hour and a half to hit the road.
The road you commented on is a road running from Singleton to Dungog, in the Hunter region of NSW. Both Cormanus and I have ridden this road and like it.
Cheers