Ok - some advice from those that travel long distances .

Mate, it is an easy run, just have roadworks from Ballina to Grafton.  Once you get past that, it is cruisy.  I suggest leaving early, around 5.30ish in the morning, gets you past shit traffic around Brisbane/Gold Coast.  Bear in mind that NSW is an hour in front.  Top up your fuel at Woodburn, next stop should be Coffs Harbour, then the servo which sells great pies just north of Taree.  Nice run to Sydney from there.  You don't say what you are riding but if it is a Heritage/Roadking/Ultra, you will do it comfortably.

500-600km days are pretty easy especially if the bike has cruise. I tend to stop every 2-2.5 hours and fill up if I need to or not, just gets me moving and usually grab a snack, or lunch from the same place. Talk to a random or two if they are around to get the brain working and then move on. Happy riding. You will love it, did I mention wet weather gear, nothing worse riding all day cold and miserable. Enjoy. 

Thanks heaps to all that have advised me thus far . Im now looking forward to it for sure . Need to get wet weather gear . Any idea what suit is best to buy for wet weather ??

Rick K - Yep did that on a ride in the busy years ago . Looked like a balloon riding along . Those were the days (NEVER forgot that ) 

I've got some adventure pants. Really comfy and you can take the liner out if it's too hot. PM me your number and I'll send you pics.Its motodry stuff.Recently rode for 2 hours in heavy rain and stayed dry inside. Pants are AdventTour. Jacket is Motodry thermo. Both not real expensive. 1000 K,s not real difficult. Done that in a day when I was a bit younger. 500 a day is easy on my Deluxe still today. Buy your food. Not worth messing about.Camp in motel room. Or pub. Cheers.

Daffy - PM sent 

Thousand KM days are easy enough, fifteen hundred if you're young and fit. Trick is to keep the stops short and keep moving.

what sort of bike are you riding?

KK - sounds like you ride fast ............thanks for the advice .

Evo,  road works finished. Drove down to Wyong 10th Dec last year. Cruise control on until Coffs Harbour, Then freeway till Nabiac 80kmh. Then freeway to Raymond Terrace. 

Kato good luck on the trip, the pump handy, I would also look for tyre sealer ( once in blue moon you might need it, thing is better to have & not need, than to need & not have ) Check the condition of your Tyres, if they have bit of wear, better to replace with new tyre before the trip!!

Kato all good advice from KrashK.  The road works are over, it is 110 virtually the entire way.  If you have it cruise control is your friend.  Just need to keep yourself mentally occupied given it is such an easy if not boring trip these days.

SoapBox  and all responders 

Little tip for you if you and anyone else heading towards Sydney from Brisbane or the other way. If staying the night or just stopping for a feed at Bulahdelah. DON'T use credit card, pay cash only. Stopped there 3 times over the last couple of years and every time the missus has had her credit card hacked. Our bank can't trace the breach but it's some overseas mob doing it. Never had any more problems since we pass straight through nowadays. Don't know if it's the servo, motel or pub but even the bank thinks it's one of them. Never had a credit card problem before or since and we use it all the time on our travels.

Brisbane to Sydney is 917km, or 9hr 30min. Driving/riding time, plus stops. 

Nope. It's still a blink and woops! missed it.

Kato,  have you thought about going down the inland route, New England hwy, then via Thunderbolts Way, or whatever it’s called,  it’s a damn sight more interesting than the h-way.