Its actually been a while since I came to wazua!
Anyway i've been in the property business from my university days, and one thing I profited immensely from is levereging. But i've seen people going bankrupt from the same, the key is having a positive cash flow and back up strategy for worst case scenario.
From your initial post i see you have around 7.5 m in cash. My advice to you is to go for the sucasa apartment and the 4 ways villa.
With this option you'll need a loan of around 10 M, with monthly repayments of around 180k for a 10 yr loan. your rent should be able to cover half your repayment, and judging from location as OZ i assume its australia, sending back around 1k AUD shouldn't be a daunting task.
As for suraya, they are okay...you'll get what you pay for.
Real estate always feels expensive when you buy it, but when you look back 10 years later its always a sound decision.
Before you can be be old and wise, you must first be young and stupid.