Gday, looking for a trip in dec just before chrissy with a tinny.

Thinking of launch at the Donnelly Boat Landing and head out to the river mouth and camp for two nights.

Has anyone had experience with this trip in how long it takes to get to river mouth?  What’s the river and beach fishing is like? Will we have any issues in dec with the water level?  

Cheers any advice apreciated.