Do you have the option of taking the holiday home later on in the year?
Personally I would land in Queensland, travel and work your away around. By doing this you will meet loads of people and have loads of fun. Once you have had enough of shitty fruit picking and you've done your 3 months for the second year visa then, I would think about taking up that holiday let. After being in the back packer scene for a abit, you will love the chance to get out of it for a while.
Hope that makes sense