Hey Johnny, right through my old stamping ground (lived in Mackay, worked out near Moranbah/Collinsville/Middlemount/Emerald). Nice out at Cape Hillborough in't it. Hope you got as cuppa at the Old Station cafe, used to love having one of their pizzas sitting out under the trees.
Don't know which way you're heading down, but turn right on to Hwy 5 just south of Kuttabul, across through Marion to Hwy 70, out west to just passed Nebo and then south for as long as you want to on Hwy 67 to Dingo, about 80 km inland from Rocky, is a good ride with slightly higher average speeds. But up to you if you're towing a trailer. After riding around the district I found Canelands Mall at Mackay a great place to get a smoothie and sit in the airconditioning.