I cant help much as we headed from Tassie to Perth to the daughters uni grad and figured we would continue the big lap on the way home, 5 years later we sort of got the biggest bits of wa sorted out but want to go back.
For my money, I would drive straight to the cape (couple or 3 days) and then start the trip, spending a big bit of time to cross the top to broome, bit less time going down the west right down to Albany. Now you are about a week from home, so depending on time left check out the most important bits on the home leg
with the thought that all this is a bonus.
cheers
blaze

