How about this route:
Meet at the car park before the entrance to the Nato.
Thru Nato - Coast Road.
Continue thru Thirroul - Bulli.
Onto the Northern Distributor (entry is via roundabout at Woonona. You cant miss it).
People who need to can get petrol from the Caltex on flinders st Wollongong.
Continue along and meet up a South Beach.
Grab a Mr Whippy + laugh at the locals in their Hyundai Accents with 20 inch rims. lol
Get on the Express Way - Meet at the bottom of MacQuarie Pass.
Take a leisurely drive up the Pass hopefully not getting stuck behind the Moto's that infest the area. lol
Eat a rancid pie made from miscellaneous abattoir sweepings at Robbo Pie shop.
Don't know where to go from there.
Some people might want to head back,
or continue thru Robertson then take a left about 2 kms down the road
(cant remember the name) and take the route over the mountains to Kangaroo Vally = lots of fun.