Sounds like a good run
I'm not familiar with the Mutaburra Rd but I used to live in Ingham and have been through sections of the Kennedy Development Rd a few times between Ingham & Mt Garnet.
There are sections that are windy and unsealed which can be a handful in wet weather so maybe a good set of mud terrains would be useful.
Only other advice I can give about that is if your tradition holds and it gets torrential go the coastal route from Ravenshoe and then head back inland from Townsville.
When it gets real wet you can be stuck for days between Ravenshoe and Ingham waiting for creeks to drop regardless of the inland or costal route, but the coast always opens up the quickest
On the plus side if there is some flow about, Blencoe falls (north of Cardwell & south of Tully) is a prime spot you can access off the Kennedy Development Rd or Bruce highway and well worth a look & a swim
Have a good trip