CBH25, What Bob said: Dirty Weekends is the go. That a some friends or new aquaintances to give you some tips along the way.
I'd head up to Maleny for a nice cuppa and arty stuff, then to Woodford, swing toward the coast on the Dág Highway.
Now swing South toward Neurum Creek Bush resort, Continue into the D'Aguillar range National Park (Mount Mee section). Map Here:
http://www.derm.qld.gov.au/parks/dag...-trail-map.pdf
Several options for differing skill levels (when it's dry).
You should make the Gantry Picnic grounds by lunchtime. Then choose your challenge.
I'd go down 'A' Break then on to Dianas Bath Road. No Lantana to scratch, but some cooooooooooool roller coaster hills, go slow and the fun lasts for ages. Great bang for the buck!
Hope this helps.
Dave.