Australia only: Business structure advice

I am looking to pursue a create a search fund with a co-founder, focused on investments in the Child Care centre space. We are looking to make both freehold and leasehold acquisitions (i.e., we will build a property portfolio on the side). Does anyone have experience on the appropriate business structure to optimise for liability and tax?

We've had conflicting advice, but our current thought process is to use a unit trust structure, with a corporate trustee that holds all of the shares in the businesses that we acquire. Does this make sense or would you structure it in a different way?