The most important thing you can do as an investor when you invest in off-plan property is to keep up your due diligence.
To minimise the 'risks' of off-plan property, you need to make sure that you're working with a trusted, proven developer.
Don't be afraid to ask them questions before you invest. You need to know the past performance of previous assets, the quality of the developments they deliver and their history of delivering on time.
Also look for reviews and testimonials to determine whether their properties match the intended quality that was suggested.