Am i being greedy or opportunist?

My sister at Aussie invited me to stay with her at Newcastle. She said the pay is good. Her husband is working at the farm eggs and the salary is as twice as higher compare with New Zealand. At farm eggs for new workers they pay 19 AUD per hour, the pay is twice as higher on the weekends. I have already granted a New Zealand working holiday visa, but now should i wait for the Australia working holiday to open on July? I dont know. I just feel that if i have both Visas i can experience both countries and earn good money. What do you think? Am i being greedy or just being opportunist?