WA is a great place for a summer holiday, I went in feb for 5 weeks and did the west cost from Esperance to Monkey Mia, the wind blew every single day. The best place i sailed was Geraldton as it has a mix of all types of sailing conditions and in my opinion suits the beginner/intermediate to the ground. You can get rental gear from Rik at Sailwest and accommodation was aplenty and reasonably priced. Feb was a good time as most of the tourist action was over but there was still plenty of action on the water, Coronation Beach was so busy it looked like one of those old photo shots from Hookipa with sailboards littering the length of the beach. I'm going back in feb again for 4 weeks, this time I'm going straight for Geraldton no sight seeing this time.
What the smallest gear you've sailed, as i was use to 120l and a 6.2, when in WA i used a 95l and a 4.7 most days?
It will be a good holiday, and you'll learn heaps...have fun.
jase.