Hello Mel & Kent,
Both of your thoughts are very good. If you want a particular school you should probably choose that first. There are several nice homes or chances to build near the school of your choice. On the other hand. If you feel your home is more important than which school, then pick the house first. It just depends which is your primary motivating factor. All of the schools in Zionsville are great. I live and work in Zionsville, primarily for my 3 children to benefit from the schools. I am certain you will be very happy here.
What part of Australia do you come From? I attended school in Frankston, Victoria; for one year. It was brilliant! I look forward to meeting you as fellow Zionsville residents. If I can be of any assistance or if I could help you as you buyer's agent/ Realtor, please let me know. If relocation is a factor, I am on the corporate relocation team. I can be reached at 317-258-1768 or firstname.lastname@example.org.