Feb 25th Travel to Heathrow
Feb 26th Fly to Perth arrive 27th Feb- recover!
Mar 1st to Mar 5th Indian Pacific Train cross continent
Mar 5th to Mar 9th Explore Sydney
March 10th Fly to Hamilton Island, Whitsundays
Mar 11th – Mar 13th Explore the Whitsunday’s and Great Barrier Reef
Mar 14th Fly to Melbourne via Sydney
Mar 15th – Mar 16th Discover Melbourne in 2 days!
Mar 17th- Mar 20th Collect Campervan and travel the Great Ocean Road
Mar 21st Fly Melbourne to Perth. Stay in Freemantle
Mar 22nd- Mar 24th Discover Freemantle and cuddle a Quokka on Rottnest Island
Mar 25th Fly to Learmonth (Exmouth). Board the Shore Thing catamaran.
Mar 26- Mar 28th Snorkelling cruise on the Ningaloo Reef
March 28th Fly back to Perth
Mar 31st Fly back to Heathrow and arrive on April Fools Day.
Where shall we go to next? 
I’m guessing the top 2 pix were of your hotel spa complex! Looks nice!
The early start will be worth it. Experiencing dawn on the Ganges is a life enhancing experience!