Great interview LeoT
One comment with your ownership structure.
Try and get those properties that are in our own name and in joint names into a trust structure. I mention is now as you may not have build up equity on these properties and a change over cost is lower.
The reason I mention it is you are a young guy and your going to meet a lady. She may not be the right lady but you take 2+ years to decide. She departs and puts out her hand for her share as she is now your defacto.
Even worse if you were to pass away (heaven forbid) and she now is in line for a substantial share and is actually your next of kin. She will just move on and have a ball enjoying your wealth.
Have a read through some of this site to get a feel for the problems.
http://www.armstronglegal.com.au/contested-wills/
I am speaking from experience having started the same way with properties in my own name etc. Trusts are the way to go. Don't even need to leave anything apart from the appointer and trustee arrangements.
Keep up the good work.
Cheers