Ok i live in western Queensland.
raised in nsw mid coast .I've traveled most roads over the years.
Some suggestions .
Brisbane/samford/dayboro/woodford/kilcoy/nanango/kingaroy/murgon/goomeri/tansey/ban ban springs/gayndah/mundubbera/eidsvold/monto/biloela/duringa/dingo(blackdown table land national park is not to be missed)/blackwater/emerald(since your coming through town give me a call i'll put you up)(heres a bit of local knowledge)anakie/rubyvale/copperfield/clermont/coppabella/nebo/eton/eungella/
There's a bunch of stuff to see on the way.
Ask about an area you are interested i'll try to fill you in on whats worth a look.
P.s Hema's Australia motorcycle Atlas ,well worth the money.